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turn off mcafee and turn on defender in windows 10

Question: turn off mcafee and turn on defender in windows 10

I want to discontinue use of McAfee (which came with the initial install) of my Windows 10 computer, and turn on Windows Defender. I don't know where to start.

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Preferred Solution: turn off mcafee and turn on defender in windows 10

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Answer: turn off mcafee and turn on defender in windows 10

Open the start menu. Select "Control Panel". Select "Programs and Features". Find and select the McAfee program in the list then click "uninstall" at the top of the list. When it has finished uninstalling Windows Defender will activate itself.Go back to Control Panel again and select "Security and Maintenance" . In the security drop down list it should say Windows Defender is turned on.

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I have windows 8 x64 that came preloaded with trial McAfee. Uninstalled after trial and security screens inform Defender turned off. Selecting to turn off does not configure the change. What is easiest way to fix issue and "move on" ?

Answer:Unable to turn on Windows Defender after McAfee Uninstall

Run regedit.exe, go to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender

and change the values from DisableAntiSpyware and DisableAntiVirus to
1.
"A programmer is just a tool which converts caffeine into code"

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Windows Vista Home Premium, How can I turn off group policy, If I try to run defender or change startup programs, it will not allow me. Message to contact your system administrator to turn off group policy.  Please help

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Windows Defender unable to turn On.
 
 
I recently had Avast antivirus installed. But removed it properly using Revo Uninstaller.
 
I ran Services.msc and found that Windows Defender is set to manual (but is unable to be set to automatic, location is greyed).
 
When I run Action Center, in order to Turn ON Windows Defender it simply opens Windows/System32.
 
Please help.
 

Answer:Windows Defender will not turn on

Perform the following troubleshooting methods:Method 1:I would suggest you to make the “Windows defender Service” startup type to “Automatic”.Follow these steps:a. Press “Windows key + R” from keyboard.b. Type “services.msc” without quotes in the “Run” Window and hit enter.c. Search for “Windows Defender Service”.d. Make “Startup Type” to “Automatic”.e. Restart the computer and then check how it works.Method 2:Perform System File Check (SFC), and then check if this fixes the issue.Follow the steps:a. Press “Windows Key + Q” to open Charms Bar.b. Type “cmd” without quotes in the search box.c. On the left pane, right click on the “cmd” option and select “Run as Administrator”.d. Type ‘sfc /scannow’ without quotes and hit enter.Note: It may ask for windows installation DVD to fix and to enable SFC to make more than minor repairs. Some files saved on your computer might get deleted when fixing corrupted files.
 
Source : http://answers.microsoft.com/en-us/windows/forum/windows_8-security/i-cant-turn-on-window-defender/4cf4d2bd-db68-42c9-b8c4-e5973217c5e5

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I have a new W7 install. I want to turn on Windows defender. But I open the program, I get dialog box,
Defender is turned off
click here to turn it on
I click
then I get the spinning circle, and that never stops

Then I get the Service is Off please restart. Doing that has not resolved the problem yet.

How do I fix this?
 

Answer:Can't Turn on Windows Defender

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Windows defender is not allowing me to turn my symantec anti virus on. When i installed the anti virus, it automatically turned windows defender off i believe. I think there is a conflict there and they wont run at the same time. Somehow I turned WD back on, and now my symantec is off and wont go into auto protect mode.

I looked through all the security settings and cant seem to locate any option to disable WD.

I hate VISTA! just bought a new PC with it and have never been more frustrated. what in the hell is wrong with microsoft? do they enjoy making things worse? I wish i would have ordered one with XP. Im tempted to remove it

Answer:Windows defender - how do u turn it off??

should have waited for windows 7, not to worry. go to start/ control panel/ then security centre then go to options for windows defender and turn it off

you should be nice and give me rep now top right hand corner of my box.

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I got a new antivirus called Bitdefender that I bought at a store. I needed something better than what I have.

The problem is that Windows Defender, which is automatically connected to my system, completely closed down and now I cannot turn it on, no matter what I press.

Is there an "off" button to bitdefender, so that I could temporarely turn on my old one? I want to keep WD as a backup, but I can't find any of the on and off buttons. I can't run 2 at a time I get that. But I didn't think turning something on and off could be that incredibly difficult. Please help.
 

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Hi,
 
I have an Acer laptop computer running Windows 7 Home Premium 64-bit. I use Microsoft Security Essentials as my anti-virus and anti-malware programs (I believe that Windows Defender is part of MSE). Last night I opened the Action Center and under the Security section, looked at the status of MSE and Windows Defender. The status window showed me that MSE was "On" but Windows Defender was "Off". I selected it and then clicked the button to turn it on, but the status remained "Off". I closed the Action Center and a short time later an information window popped up telling me that Windows Defender had stopped working. I was informed that I could restart it by rebooting, which I did. After the reboot, I looked in the Action Center again and saw that it was still in the "Off" state.
 
I decided that the program might have gotten corrupted somehow, so I decided to uninstall MSE and then download it again and reinstall. I did this and everything went fine. However, the Action Center still told me that Windows Defender was "Off" and I still couldn't turn it on.
 
The only reason that I could think of for this is that there is some other anti-malware program running. About a year ago, I purchase Malwarebytes and installed it on my main desktop computer, and I thought that I had also installed it on the laptop as well, but if I go into Programs and Features, there is no evidence of it. Is it possible that I did a Malwarebytes installation and it somehow failed to ins... Read more

Answer:I can't turn on Windows Defender.

If you check this out:  http://answers.microsoft.com/en-us/protect/forum/protect_defender-protect_start/windows-defender-is-off-i-cant-turn-it-on/1d7ef840-e355-40f7-8aeb-225f86cbd821
 
Best explanation for this is right here:  
 
It's not really a problem, neither with Norton nor with Microsoft Security Essentials. It's by design.
Microsoft Security Essentials, AVG, Norton, and McAfee all turn off Defender. That's good, not bad. Not only is there potential conflict, but there's no reason to have both; they all essentially have something very similar to Defender built into them, and running both at once will hurt your performance and create the risk of problems as they conflict with each other.
 
Even if this wasn't the case, I wouldn't worry too much about it.  Windows Defender sucks anyway.    

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I recently noticed that windows defender had been off and I turned it on and scheduled daily scans and reset a few options.
Then yesterday, I find that windows defender won't turn on at all.
I know someone hacked my system. Apparently in my home at some point and attached a device via bluetooth and then hid all acess to blue tooth controls.
I know nothing about programming. But when my computer started acting odd, I tried to trouble shoot as best I could.
Last month I had to do a system restore.
Latest problem is windows defender is no longer accesible in any way that I can find and I've tried a few ways. It just won't open.
Ideas?
 

Answer:Windows defender won't turn on

Welcome to Major Geeks!

What is your Windows version?

What I would suggest at this time is to uninstall Windows Defender, and install Microsoft Security Essentials instead: http://www.microsoft.com/en-us/download/details.aspx?id=5201
 

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In the action center on windows 8.1 it is idicated that windows defender is turned off.When I click turn it on the action center window closes.The file folder "system 32" in a new window.Then nothing else happens.what do I do? I've included a screen capture below.  

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I have only just realised that Windows 8 has a perfectly good antivirus and anti-malware features of its own. Not realising this before I have installed and uninstalled both AVG and Bit Defender. I tried to turn on Windows 8 defender but it refuses. It does not say that I am or am not protected against viruses. How can I tell whether I am protected and, if I am not, how do I turn on Windows 8 Defender?

Answer:Windows 8 defender won't turn on

Thanks Jock1e for your advice. In fact I had AVG and Bit Defender sequentially and uninstalled them with Revo uninstaller which is quite thorough. I did though follow your advice and got uninstallers from their websites and ran them with what appeared to be little effect. Going to services turned it on for about 1 second and then off as usual. What seems to be going on is that once you have used an external antivirus (Macafee was on the Windows 8 DVD) it won't go back to Defender.
Any thoughts on a registry tweak?
Pangloss

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Hi, I already run ESET Smart Security.
In my security settings it says that Windows Defender is also switched on and running 2 or more antispyware programs might slow your computer down.
How do I turn Defender off?
Regards
Graham

Answer:How do I turn off Windows Defender?

In your searchbox, enter defender and hit return... turn defender off...

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I was recently given a Toshiba laptop with Windows 8 installed.

I would like to use Windows Defender as the real time virus protection.
I have installed MBAM and Spybot S&D.
Windows Firewall is turned ON.
I used Norton's tool to uninstall the Norton products, but it did not fully work and I had to use the uninstall program feature for some components.

I have spent a full day trying to turn ON Windows Defender,and reading posts in many forums.

When I go to the Action Center, it tells me that Defender is turned off. When I hit the button to turn it on, the button does not seem to activate.

I have a message in my system tray to turn on Virus Protection.

I am not comfortable messing with Registry keys based on random recommendations I have seen online; would do so with your direction!l

My questions are :
1) I like defender because it is lightweight and effective. Can you help me turn it on?
2) Would you recommend something else instead?
thanks so much in advance,

Helene
 

Answer:Windows Defender Won't Turn On

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 how to turn on windows defender

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I keep getting notifications that it's not on. When I go to Settings, it looks like what's below, and I can't get it to change. To be honest, I'm not even sure if this shows it's on (yeah, I'm uncertain about the toggle switch), but since I keep getting the warnings that it's off, I guess I've got problems.

 

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O.k....Out of curiosity I installed Avast free AV.....then decided to stay with Windows Defender, and so uninstalled Avast......now, Defender won't turn on, it tells me that "another anti virus programme" is running...... any help to turn it back on appreciated.......Del.

Answer:Windows Defender Won't Turn On

Avast Uninstall Utility | Download aswClear for Avast Removal

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Windows Defender is turned off and when I try to turn it on I get "Windows Defender is turned off by group policy." It refuses to turn on. It says to contact my administrator. This is a single personal computer, there is no administrator. My anti-virus is Avast Free. I also have a McAfee program installed by Comcast.

Answer:How can I turn Windows Defender on.

If you have more than one AV running in real time it will slow down your computer. They check each other and cause issues. Decide which one you prefer and turn the others off. As given there are free programs like MalwareBytes which you can use on demand when you want to check for malware.EDIT:You are the administrator.Always pop back and let us know the outcome - thanksmessage edited by Derek

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So today my McAfee trial expired, using the removal tool I uninstalled it before attempting to switch on windows defender.
A few problems have occurred, I click on the windows defender icon and the "windows defender has been switched off" message appears. I go to the action centre and the system 32 folder appears.
I try the command prompt method to enable windows defender and it also does not work
I try running a scan via command prompt and it tells me some corrupt files have been found
I have also tried changing the start up setting from manual to automatic but I cannot seem to do this as the option is greyed out
Is malware causing the prevention of windows defender being switched on? Bearing in mind my computer has recently had a reboot and also works at top speed.
Please help
Thanks

Answer:Windows defender won't turn on

Start with Windows Defender - Turn On or Off in Windows 8 these details from Brink in the Windows 8 Forum area..
 
Once you have read and followed the details, please post back with any concerns ......
 
Thank You -

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Hi -I have Windows 7 with IE 9.  I go to Control panel and Action Center and find the following message:  Windows Defender and avast Antivirus both report that they are turned on.I want to turn off Windows Defender and leave avast Antivirus as my protection against virus.  I can go to Control panel and to Windows Defender and the panel says that it is on BUT I can not find out how to turn it off.  Can you help me?   Thanks     Bob

Answer:How do I turn Windows Defender off?

start - run - services.mscSet the Windows Defender service to DISABLED

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Hi,Can anyone tell me how to turn off avg free 8.5 and windows defenders please, I am running windows vista and I need to turn them off to install a programe.many thanks for your help,cheers

Answer:How to turn off avg & windows defender

For AVG right-click on system tray icon and click Exit

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My laptop has Norton anti virus which expires in 2 weeks and I plan on using Windows Defender. OS is Windows 10- will Windows Defender turn on automatically when Norton expires or will I have to turn it on. If so how is Defender turned on.

Answer:Will Windows Defender turn itself on

Originally Posted by toma1867


My laptop has Norton anti virus which expires in 2 weeks and I plan on using Windows Defender. OS is Windows 10- will Windows Defender turn on automatically when Norton expires or will I have to turn it on. If so how is Defender turned on.



After Norton expires, restart (reboot) the system. Defender should automatically turn on. Opening Defender (in search, type DEFENDER. App will be at top) should look like this.

If Defender is off, it will look like this. Click Turn On. You may also receive a notification banner in lower right of desktop.

----------------------------------------------------------------------------------------------------------

As a side note, if Norton is set to expire in a couple of weeks (around month end), you may want to consider just disabling it now and uninstalling and setting up Defender. On 8/02/16, there is a major Windows 10 update scheduled. Just a suggestion to avoid having to deal with both at the same time. TC

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This Windows Defender keeps popping up everytime I bootup. Kind of annoying (like Windows itself). How do I fix this? Thanks.

Answer:How do I turn off Windows Defender

  
Quote: Originally Posted by jacatone


This Windows Defender keeps popping up everytime I bootup. Kind of annoying (like Windows itself). How do I fix this? Thanks.


Here you go,

Windows Defender - Turn On or Off

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Hello group

How can I turn off Windows defender and keep it off? Don't worry this computer never goes online and when it does I'll turn Windows defender back on.

My computer is set up as administrator and user. I always use the user side but I cannot turn Windows defender on or off from that side. I must always go back over to the administrator side, turn it off and go back to the user side. I have turned off Windows defender on the administrator side but when I turn the PC back on in the morning Windows defender defaults on.

Is there a way that I can turn it off from the administrator side and don't have to worry about it defaulting back on again when I reboot.

Thank you

Answer:Turn Windows defender off and keep it off

Hello niceguy,

The tutorial below can help show you how to turn off Windows Defender.

Windows Defender - Turn On or Off

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Windows Defender-Turn Off
I want to turn off Windows Defender in Vista. When I go to the Help page, the wording does not agree with my option. My Default actions allows me to Remove (or permanently uninstall Defender), which I would rather not do unless necessary.
My Options page is as follows:
http://i38.photobucket.com/albums/e110/Jerry8C/Defender.jpg
Is there a method to temporarily turn Off or disable Windows Defender?
Jerry

Answer:Windows Defender-Turn Off

Hey Jerry,

A quick google search told me how.
Under Administrator Options, clear the selection "Use Windows Defender", and you're all set to go.

-Mina

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Good day, I need assistance in the following category. I am running on windows 7 and I cannot get to turn on windows defender. I keep getting this message, whenever I try to read it, it disappears. I tried turning it on in the control panel and thru the help window with no success, i have removed all software that could possibly be preventing it from turning, all am left with is my antivirus, avast free edition can You please assist. Thanks Roger

Answer:Am Not able to turn on windows defender

What version of W7 are you using?If it is 64bit, download here.http://www.microsoft.com/downloads/...

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I am trying to completely turn off/disable windows defender. i have norton and malwarebytes pro installed on my computer so there is need for another antivirus program to be running at all.

i managed to turn off the real time protection, but the service is still running in the background unnecessarily and i have an icon stuck on the taskbar that tells me that my computer is "at risk"

i've tried many different things to turn off the service. trying to just use the task manager to disable the service results in an error message "access is denied" even when running as admin. trying to stop it from starting on boot through services.msc doesn't work either. all of the options are grayed out and inaccessible.

i read that you can use group policy manager to disable it but it doesn't come with the version of windows 10 that i received apparently...

any help to disable the service completely would be very helpful, i know that its not entirely necessary to do this but its something i want to be able to do and can't understand why it seems so complicated.

Answer:trying to turn off windows defender

Hello Junked, and welcome to Ten Forums.

The tutorial below can help show you how to turn off Windows Defender.

https://www.tenforums.com/tutorials/5...dows-10-a.html

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My PC was hacked by some malware software. The software is uninstalled by me but windows defender is not getting on. Attached is the error message being shown. Can anyone help how to turn back on windows defender?
 

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if i click my windows defender or run it with "run as admistrator", the error box always comes up and it says
"This application is turned off by group policy
If you are using another app to check for malicuous or unwanted soft use Action Centre to check that app's status
To allow this aplication to run, contact your security administrator to enable the program via goup policy."
i have done the instruction "ctrl + r" and search windows service centre and i can't change it into automatic
pls help me and sry for my bad english

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Windows Defender keeps turning itself back on and deleting files that I need without conformation. Every time I try to go disable the service completely, the options are greyed out like this like shown in the picture. I am also denied permissions through command prompt, as shown in the second picture. Is there a way I can make it so the the options are no longer greyed out and make the service not start on startup?

I also tried making an exclusion in Windows Defender to make it so it doesn't scan the C:/ drive, it worked at one point but now after a complete OS reset, it wont let me add an exclusion because I need elevated permissions. I don't really know why they call it "your pc" if you can't change half the settings they throw in there. I'd appreciate it if anyone could tell me how to make it so I have absolute control of my system, thank you!

Answer:How can I turn Windows Defender off?

In Windows 10 you can turn off Windows Defender real-time protection, but it will only be temporary. Windows will automatically turn real-time protection back on if it's off for a while.



This tutorial may help:






This tutorial will show you how to completely turn on or off Windows Defender for all users in Windows 10.




Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

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Hi guys!

I'm new to the forums (first post) so please be kind, haha!

I have recently built a PC myself and had no issues whatsoever, until the other day when an Action Centre notification popped up. For some reason, Spyware and Virus protection have both turned off automatically and when I am prompted to turn them back on, I get an error saying "Action Centre can't turn on Windows Defender. Please try again later."

I have tried the services.msc method and tried to activate WinDefend that way, but encounter another error "Windows could not start the WinDefend service on Local Computer. Error 2: The system cannot find the file specified."

I have looked up this issue with no resolution yet - as most of the solutions are for people that have installed third party Protection Programs like AVG, Norton etc.

I haven't installed any programs like that, and have also checked in the Control Panel to make sure one didn't install itself automatically with an install of another program.

If anyone could help me out with some tips, that would be greatly appreciated.

Answer:Cannot turn on Windows Defender

Hey mate,

This is not a solution to your problem, but hear me out. Consider another AV for a moment. I used to use Defender exclusively until I met Avast!, which runs faster than Defender and is better at catching malware, as numerous tests show. So I would recommend installing both Avast! and another program called Mbam from Malwarebytes.org. Use both of their full scans to check your computer for infection (because defender was somehow disabled).

Then, either we can try to fix defender, or you can stick with Avast! The choice, is yours.

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No matter what I try, it wont let me turn it on.
This is a brand new Dell Xps 13 running Windows 8.1
I would figure it would be easy to turn on?

Answer:Cannot turn on Windows Defender?

Hello Kwitel, and welcome to Eight Forums.

Do you have a 3rd party AV program installed? Usually a new OEM PC will come with a trial AV program installed.

Some 3rd party antivirus (AV) programs may turn off Windows Defender when they are installed to be used instead, and will not allow Windows Defender to be turned back on until the 3rd party AV has been completely uninstalled.

Windows Defender - Turn On or Off in Windows 8

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For some reason, Windows isn't letting me activate Windows Defender even though I have no installed antivirus (as the below log reflects). I get a message that some program I've installed keeps me from doing it. If I try to go through the Action Center, hitting "Turn On Now" just opens system32 in Windows Explorer.

What could be causing this? My school requires us to have some "SafeConnect" program on our computer in order to connect to the internet there, but I uninstalled it as I'm home for the weekend and am trying to figure out why this is happening. Thanks.

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 8.1, 64 bit
Processor: Intel(R) Core(TM) i7-4700HQ CPU @ 2.40GHz, Intel64 Family 6 Model 60 Stepping 3
Processor Count: 8
RAM: 12170 Mb
Graphics Card: Intel(R) HD Graphics 4600, -1984 Mb
Hard Drives: C: Total - 286159 MB, Free - 148293 MB; D: Total - 407623 MB, Free - 407476 MB;
Motherboard: ASUSTeK COMPUTER INC., G750JS
Antivirus: None
 

Answer:Windows Defender - Can't Turn On

What firewall / security suite or anti-virus do you currently have on the PC - or you have ever had on the PC in the past - any trial ware - like Norton, kaspersky or Mcafee or any free security suites like zonealarm, AVG , Webroot etc
 

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Hi All

Oops .. I got it ..

Have to turn it from Action center .

Windows Defender - Turn On or Off in Windows 8

Thanks .

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cannot turn on windows defender. just get message box saying turned off.

Answer:how to turn windows defender on again

Hello Pamela, and welcome to Eight Forums.

Do you have a 3rd party antivirus program installed?

If so, then Windows Defender will be disabled by default and cannot be turned on until the 3rd party AV program has been uninstalled.

If not, then the tutorial below may be able to help.

Windows Defender - Turn On or Off in Windows 8

Hope this helps,
Shawn

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Hi,

Running Windows 8.1 on Dell XPS bot last fall. Have been running Windows Firewall and Window Defender from the beginning.

Last week, "Solve PC Issues" notifications on bottom bar indicated Windows Defender turned off. Clicked the "Turn On Now" button. Got following pop-up message:
An error has occurred in the program during
initialization. If this problem continues please
contact your administrator. Error code 0x80073b01

Went to control panel > system and security > action center. Same message in notifications. Clicked "Turn on Now" from there - same result. Also tried to turn on as administrator (I am the moron administrator). Same result.

I never ran another anti virus program on this computer. None are listed among programs for deletion (maybe one came with, but I don't see it and never activated it). I did not ever turn off Defender. I do have the Spybot free program installed, but that has been on since beginning of February with no problems, and I think it only runs manually when I do a scan (it is more anti-malware I think, not full always running anti-virus).

Suggestions? Help? (Please). Thanks, Lazlo

Answer:Windows Defender went off & won't turn on (8.1)

As far as I have checked the error could be an infection.
Have you tried a third av program or any anti-malware programs?

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I've spent more than two hours on trying to fix this mess. I did several fixes that did not work at all.

It was working last night then I decided to refresh my PC. I installed several programs including drivers, windows updates and Malware Bytes (No Anti-virus installed).

Today, I found out Windows Defender was not working. I did try launching it from search, action center, and attempted to manually start which clearly didn't work. It is set to automatic in services. All other tabs such as Update, History, and Setting are greyed out.

I always get the response "The service couldn't be started. This programs service has stopped. You can start the service manually or restart your computer, which will start the service."

I also deactivated UAC.

Answer:Windows Defender will not turn on

Any triggering events that lead up to your issue? Did you recently uninstall a 3rd-party AV? Any chance you have been infected by malware?

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when I look, it says the app has been turned off, but I can't find how/where to turn it on.

Answer:How do I turn Windows Defender on?

Hello Bill,

The tutorial below can help show you how to turn on Windows Defender. However, if you have a 3rd party AV program installed, it will usually disable Windows Defender until the 3rd party AV is uninstalled. Of course, you would only uninstall it if you wanted to use Windows Defender instead.

Windows Defender - Turn On or Off in Windows 8

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I'm running 8.1.

When I try to run Windows Defender through services (since it is set to manual and turned off), I get the following message:

Windows could not start the Windows Defender Service service on Local Computer.

Error 577: Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damanged, or that might be malicious software from an unknown device.

I can't get Windows Defender to start through the Action Center. When I turn it on, it just brings me to the system32 folder.

Any ideas? Do I need to do a clean install? I used to have avast installed, but have uninstalled it. If I can't get windows defender to work should I install something else?

EDIT: I am running malwarebytes anti-malware. Do you think there's a conflict there?

Thanks!

Answer:Windows Defender Won't Turn On

Hi there. Yes, there's definitely a conflict. Defender by default will automatically turn off when another AV is installed.

Is there a reason why you want to use Defender?

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I have recently bought a new laptop and the free months trial of mcafee is due to end in 2 days time I have been told to turn on windows defender but if I click on it it just says defender is turned off everywhere I have looked for help just says to click on it and click settings but there is nothing which says that all it says is close can someone please help because I don't know what to do and if you can help can you please use basic simple instructions because I am really struggling many thanks if you can.x

Answer:how do turn windows defender on.x

Windows Defender is turned off by default when a third party anti virus program is installed. When you remove McAfee, it will become active once again.

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My laptop has Norton anti virus which expires in 2 weeks and I plan on using Windows Defender. OS is Windows 10- will Windows Defender turn on automatically when Norton expires or will I have to turn it on. If so how is Defender turned on.

Answer:Will Windows Defender turn itself on

toma1867 said:

My laptop has Norton anti virus which expires in 2 weeks and I plan on using Windows Defender. OS is Windows 10- will Windows Defender turn on automatically when Norton expires or will I have to turn it on. If so how is Defender turned on.



After Norton expires, restart (reboot) the system. Defender should automatically turn on. Opening Defender (in search, type DEFENDER. App will be at top) should look like this.

If Defender is off, it will look like this. Click Turn On. You may also receive a notification banner in lower right of desktop.

----------------------------------------------------------------------------------------------------------

As a side note, if Norton is set to expire in a couple of weeks (around month end), you may want to consider just disabling it now and uninstalling and setting up Defender. On 8/02/16, there is a major Windows 10 update scheduled. Just a suggestion to avoid having to deal with both at the same time. TC

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I tried several ways to turn it on. I dont know that I have another active anti virus.
I do have Spybot. Will that interfere?

Answer:Why can't I turn on Windows Defender?

Originally Posted by Windows Central Question I do have Spybot. Will that interfere? It might.
Have you tried rebooting your PC? Try that, and if you still can't get Windows Defender to start, disable or uninstall Spybot.
I'd recommend Malwarebytes for an anti malware program. Just a personal preference really.. But I've been using it for many many years and have never had any problems. Plus it plays nicely with Windows 10 and Windows Defender.

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Hi Guys
I'm using Win 8 Pro and following some advice on another thread I went to check my Windows Defender via 'all apps'

When I click on it I just get the following message...........

"Windows Defender has been turned off and it isn't monitoring your computer"

I've tried a few things but seem to come up with the same message whichever way I try to start Defender. obviously I'm a bit worried that my machine might be unprotected.

Any advice?

Answer:How to turn on Windows Defender

bring up charms menu on right hand side of screen, click settings, click control panel, click window defender, click settings tab, click turn on real time protection.

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Hi Gang,

I am on Windows 10 Home version. this is a 2 week old install of Windows 10.. I am all uipto date with my drivers besides my Video card drivers..

I installed Kaspersky AV and then I uninstalled it with Control Panel add remove. I am know unable to turn on Windows Defender..

I tried using Kasperskys removal tool which said it removed some but I still can not turn on Windows Defender..

When I go there with Settings/Update and Security all the options are Greyed out.. I tried contacting Kaspersky help line but they are blaming it on a Microsoft issue as usual so no help there..

I am unsure what else to try I googled a few things but none of it worked.. So I hope the experts here can help me as I have no where else to turn too..

Answer:Can not turn on Windows Defender..

Kaspersky may have set the registry setting that disables Defender and it has not been removed yet. See Option Two in this tutorial...
Turn On or Off Windows Defender in Windows 10

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So basically the issue is this: I suspected my computer was infected with Malware about a week ago, so I installed the free military Mcafee edition that they give us. The problem seemed to go away until, well, I was continually disconnected from a video game that I play online. This is when I realized that I wasn't able to turn on either of these firewalls.

I tried using Windows' forums, but their anti-virus software detected NOTHING on my computer. I also tried command prompts and admin files looking for the Windows firewall, but it doesn't exist. I'm kind of desperate to fix this computer because it has information on it, plus I don't want to buy another one.

Any help would be appreciated.
 

Answer:Cannot turn on Windows (or Mcafee) firewalls.

If you suspect your machine is infected. Read this post : http://forums.techguy.org/virus-other-malware-removal/943214-everyone-must-read-before-posting.html and post in the Malware Removsl Forum.
 

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A couple days ago, a McAfee window popped up saying it had caught a trojan. A little while later, I noticed that the McAfee firewall was disabled. When I try to turn on the firewall, it immediately turns itself off.

The windows firewall also appears to be disabled. When I try to change the settings an error message pops up. When I try to turn it on or off there is no indication that it was turned on or not.

Answer:Cannot turn on windows or Mcafee firewalls

DownloadFSS Checkmark Internet Services Windows Firewall System Restore Security Center Windows UpdateClick on "Scan".Please copy and paste the log to your reply.DownloadTDSSkillerLaunch it Click on "Scan".Please post the LOG report Please download GMER from here(doesnot work on 64 bit OS)http://www2.gmer.net/download.phpTemporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.GMER will open to the Rootkit/Malware tab and perform an automatic Full Scan when first run. (do not use the computer while the scan is in progress)If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.Now click the Scan button. If you see a rootkit warning window, click OK.When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.Click the Copy button and paste the results into your next reply. DownloadaswMBRLaunch it, allow it to download latest Avast! virus definitionsClick the "Scan" button to start scan.After scan finishes,click on Save logPost the log results here

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I just found out that windows defender will not turn on. It says its turned off by group policy. I know its not the best but it is still helpful. Any ideas to turn it on?
 

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Hi there,

Just wondering if someone could help. Noticed today that I got messages in my action centre saying that my firewall and virus protections isnt turned on. When i follow the link to turn them on i get directed to system 32 files? Not done this before and i havent got any extra virus protectors on my laptop. only thing i have done to the computer recently was upgrade to windows 8.1 and install the updates.

Any help or info would be much appreciated.

Thanks.
 

Answer:Cant turn on windows defender or firewall

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When you go to turn off defender, a message tells you, " You can turn this off temporarily, but if it's off for a while we'll turn it back on automatically."

First problem I have is with grammar. The folks at Microsoft should know NOT to use a coma and the word But next to each other as they mean the same thing.. grammatically this is wrong and redundant. This reads as major unprofessional.

Second problem is the language, it's rude. Who The Hell does Microsoft think they are not being gentile about this 180 change of events. People aren't gonna be happy about this change in policy for defender but they sound so flip about it.

Third problem is of course this app is not critical to the operation of the operating system (it's an extra offered for your use but in no way critical.) I can and should be able to replace this software with any anti-virus I choose. If Microsoft demands they have the right to turn on this unwanted software whenever they like then it WILL cause problems for other anti-virus software or apps I wish to run. I need to disable this completely so Microsoft cannot turn it back on. Whats the hack for this fix?

Answer:How do you turn off Windows Defender completely?

This might help : Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

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While attempting to install Avira AntiVirus, it informed me that Windows Defender was running and that I should turn it off. I open Defender and attempt to click on Tools but there is no response and the Tools icon is grayed out. Googled and came up with no remedy to this problem so here I am.

Anyone have a suggestion how I can turn off this program and/or get the Tools icon to be active?

Thanks.

Problem OBE- Tools icon now works. Must have been magic!

Answer:Unable to Turn Off Windows Defender

Did you tryed with stoping the service of Windows Defender ?
Services - Start or Disable

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I have an older laptop that's rarely used, but I still try to keep it updated (originally Windows 7, now 10). I've been using Bitdefender Free as my antivirus. One day Bitdefender just suddenly stopped being able to update. I tried uninstalling and reinstalling the program, but now I receive an installation error message.

Without an antivirus, I decided to just use the Windows 10 Windows Defender. However, it won't turn on. It says another antivirus is already being used. There isn't one.

How can I correct this so I have an antivirus again?
Thanks!

 

Answer:Windows Defender - Unable To Turn On

Did you try the Bitdefender uninstall program?
It might allow Windows defender to turn on.
Good luck,
s.

I clicked on the link and it took me to a sales site.
It should be https://www.bitdefender.com/uninstall/
Question to Majorgeeks supremo's
How come my links are being hyjacked to http://www.viglink.com/shop/merchants ?

Apologies Ooooops...
 

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new clean install of win7home premium on celeron???toshiba satellite s5975 laptopnew HDD OS from imagecopy...????????-this operation returned because the timeout period expirederrror code 0x800705b4

Answer:windows defender won't activate / turn on

0x800705b4http://is.gd/3tjnZEhttp://www.windowsbbs.com/windows-v...Turn Defender off & install MSE.http://windows.microsoft.com/en-us/...Microsoft Security Essentials ( MSE )http://www.softpedia.com/get/Antivi...http://www.softpedia.com/progScreen...http://www.techsupportalert.com/9be...http://www.techsupportalert.com/bes...http://www.microsoft.com/security_e...http://www.microsoft.com/security_e...System requirementshttp://www.microsoft.com/en-us/secu...Check list for installing Microsoft Security Essentialshttp://experts.windows.com/w/expert...Can Microsoft Security Essentials ( MSE ) protect me from online banking and shopping.http://answers.microsoft.com/en-us/...If you choose to use Security Essentials, please follow the steps in this thread first, especially the part about removing all existing realtime antimalware:http://kb.eset.com/esetkb/index?pag...

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Windows Defender unable to turn On.
 
 
I recently had Avast antivirus installed, just for an additional scan. But removed it properly using Revo Uninstaller.
 
I ran Services.msc and found that Windows Defender is set to manual (but is unable to be set to automatic, location is greyed).
 
When I run Action Center, in order to Turn ON Windows Defender it simply opens Windows/System32.
 
 
Found the following while researching online,
 
Performing miscellaneous checks:
 * Windows Defender Disabled
   [HKLM\SOFTWARE\Microsoft\Windows Defender]
   "DisableAntiSpyware" = dword:00000001
 
Unable to set to '0', displays an error message..
  "Cannot edit DisableAntiSpyware"
 
 
Please help.
 

Answer:Windows Defender unable to turn ON

This post is from Farbar Service Scanner...
 
The files in question are the ones poses the problem. (MsMpEng.exe)
 
 
Farbar Service Scanner Version: 03-03-2013
Ran by David (administrator) on 01-05-2013 at 12:04:39
Running from "C:\Users\David\Desktop\Bleeping Computer"
Windows 8 Pro  (X64)
Boot Mode: Normal
****************************************************************
Internet Services:
============
Connection Status:
==============
Localhost is accessible.
LAN connected.
Google IP is accessible.
Google.com is accessible.
Attempt to access Yahoo IP returned error. Yahoo IP is offline
Attempt to access Yahoo.com returned error: Yahoo.com is offline

Windows Firewall:
=============
Firewall Disabled Policy:
==================

System Restore:
============
System Restore Disabled Policy:
========================

Action Center:
============
Windows Update:
============
Windows Autoupdate Disabled Policy:
============================

Windows Defender:
==============
WinDefend Service is not running. Checking service configuration:
The start type of WinDefend service is set to Demand. The default start type is Auto.
The ImagePath of WinDefend service is OK.

Windows Defender Disabled Policy:
==========================
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender]
"DisableAntiSpyware"=DWORD:1

Other Services:
==============

File Check:
========
C:\Windows\System32\nsisvc.dll => MD5 is legit
C:\Windows\System32\drivers\nsiproxy.sys => MD5 ... Read more

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How can I turn off the notification pop up and sound that Defender has detected and is deleting a malware intrusion? I want Defender to continue to work in the background, but the pop up and sound are annoying. How can I turn them off, yet keep Defender working? I'm using Windows 10.

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When you go to turn off defender, a message tells you, " You can turn this off temporarily, but if it's off for a while we'll turn it back on automatically."

First problem I have is with grammar. The folks at Microsoft should know NOT to use a coma and the word But next to each other as they mean the same thing.. grammatically this is wrong and redundant. This reads as major unprofessional.

Second problem is the language, it's rude. Who The Hell does Microsoft think they are not being gentile about this 180 change of events. People aren't gonna be happy about this change in policy for defender but they sound so flip about it.

Third problem is of course this app is not critical to the operation of the operating system (it's an extra offered for your use but in no way critical.) I can and should be able to replace this software with any anti-virus I choose. If Microsoft demands they have the right to turn on this unwanted software whenever they like then it WILL cause problems for other anti-virus software or apps I wish to run. I need to disable this completely so Microsoft cannot turn it back on. Whats the hack for this fix?

Answer:How do you turn off Windows Defender completely?

This might help : Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

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Tried to turn on windows defender services, access denied. Tried to turn it on in security center and it sends me to my systems 32 folder. Tried to search around for a couple hours with no luck in fixing it.

Answer:Windows defender wont turn on

Hi & to Bleeping Computer Forums!My name is Jürgen and I will be assisting you with your Malware related problems. Before we move on, please read the following points carefully: My native language isn't English. So please do not use slang or idioms. It could be hard for me to read. Thanks for your understanding.Please read my instructions completely. If there is anything that you do not understand kindly ask before proceeding.Perform everything in the correct order. Sometimes one step requires the previous one.If you have any problems while you are follow my instructions, Stop there and tell me the exact nature of your problem.Do not run any other scans without instruction or Add/ Remove Software unless I tell you to do so. This would change the output of our tools and could be confusing for me.Post all Logfiles as a reply rather than as an attachment unless I specifically ask you. If you can not post all logfiles in one reply, feel free to use more posts.If you have illegal/cracked software, cracks, keygens, etc. on the system, please remove or uninstall them now!If I don't hear from you within 5 days from this initial or any subsequent post, then this thread will be closed.If I don't reply within 24 hours please PM me!Stay with me. I will give you some advice about prevention after the cleanup process. Absence of symptoms does not always mean the computer is clean.Step 1Please run a FRST scan. This will help us diagnose your problem.Please download Farbar Recovery... Read more

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Windows defender turned on when i didnt need or want it to. there Isn't a turn off button other than in gpedit.msc.
win+r to run gpedit.msc, says it cant find it. I even looked where the msc should be and its not there.

Answer:No gpedit.msc, cant turn of windows defender.

Group Policy and gpedit.msc are only in Windows 10 Pro and above. If the version is shown as Windows 10 with no other designation it will be the home edition that does not have it. It cannot be added. It is not just gpedit.msc but the infrastructure that supports it that is missing.

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Hi All,
I have windows 7 and use MSE and windows defender but I have to manually start defender I have tried setting it to Automatic in services. Am I missing something?

Answer:Windows Defender have to manually turn on

Hello Golf,

When you install MSE, it will automatically turn off Windows Defender since it will be used instead. You do not want to have Windows Defender turned on with MSE installed.

Hope this helps,
Shawn

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Mod Edit:Moved from Vista to Am I Infected ~~ boopme
 
I have the issue that I cannot turn on Windows Firewall or Defender.  When I try to turn on the firewall I get the error "Due to an unidentified problem, Windows cannot display Windows Firewall settings".  When I try to start Windows Defender I get the error "Windows Defender encounted an error: 0x80070424.  The specified service does not exist as an installed service."
 
Does anyone know if this a problem with the computer or possibly a virus?

Answer:Windows Firewall And Defender Won't Turn On

    Please download TDSSKiller from here and save it to your DesktopDoubleclick on TDSSKiller.exe to run the application, then click on Change parameters


Check Loaded Modules  and Detect TDLFS file system.  Do not check Verify file digital signatures (even though it is checked in the example)If you are asked to reboot because an "Extended Monitoring Driver is required" please click Reboot now


Click Start Scan and allow the scan process to run

If threats are detected select Skip for all of them unless I instruct you otherwiseClick Continue


Click Reboot computerPlease post the contents of  TDSSKiller.[Version]_[Date]_[Time]_log.txt found in your root directory (typically c:\)in your reply===================================================aswMBR--------------------Download aswMBR and save it to your desktop.
Please disable your real time protection of any Antivirus, Antispyware or Antimalware programs temporarily. They will interfere and may cause unexpected results.If you need help to disable your protection programs see hereDouble click the aswMBR.exe file to run it. Please allow when you are asked to download AVAST antivirus engine defs.Wait until the AV update is done, then click on the Scan button to start. The program will launch a scan.

When done, you will see Scan finished successfully. Please click on Save log and save the file to your desktop.

Please post the contents of the log in your next reply.NOTE:  aswMBR... Read more

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Hi.
I've got windows 8 64 bit, and for some time now I have been unable to turn on defender antivrus.
I've tried doing it from the sidebar and get the message 'windows defender has been turned off and isn't monitoring etc'.
Then when I try to turn it on from the 'Action centre' I just click through to a folder being opened with this address: 'G:\Windows\system32'
Is this an infection? How do I fix it?
Thanks very much for your help.
Cheers
mackerman

Answer:Windows 8 system can't turn on defender

 
Let's look for malware and then we will try to restore the services.
 
 Install and run MBAM
Information about MBAM: http://www.bleepingcomputer.com/virus-removal/how-to-use-malwarebytes-anti-malware-tutorial
If this scan has been done, please post the the log into your next reply.
 

  Running TDSSKiller to obtain log
 
Note: Don't cure or delete a threat, but choose skip for all instead.
Please download TDSSKiller from here and save it to your Desktop
Doubleclick on TDSSKiller.exe to run the application, then click on Change parameters

In the Additional options: Check Detect TDLFS file system
Click Start Scan and allow the scan process to run

Choose for all threats to Skip for all of them.
Click Continue
Please post the TDSSKiller.[Version]_[Date]_[Time]_log.txt found in your root directory (typically c:\)
===================================================
 
 ESET Online Scanner
==================
Note: If your AV is blocking Eset online scanner, please temporarily disable your AV.
 
I'd like us to scan your machine with ESET OnlineScan This process may may take several hours, that is normal.
Hold down Control and click on this link to open ESET OnlineScan in a new window.
Click the  button.
For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
Click on esetsmartinstaller_enu.e... Read more

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Hi,I recently disabled Windows Defender but when i went to turn it back on it just hangs,and times out with the error 0x800705b4.
I've been into services and it's there but it wont let me start it and comes up with error 126 module could not be found.
Thanks in advance for any help.

Answer:Windows Defender wont turn on?

Just found a fix for it. Here's the link it's the second answer post down by Sabrina Shen and step 2 "restore the windows registry key" Windows Defender won't start

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I am running Win 8.1 on a Samsung tablet and use Windows Defender for protection. I own the tablet it is not part of any network.
I was searching the net and Defender reported malware. After a bit of a tussle the malware seemed to be removed but Defender was turned off, so I have no protection. I went into the Control Panel/Security Centre and it reported this and had a button at the end of the message for turning Defender back on. However the button did not work. It was visible but did not seem to be enabled. When I clicked on the defender app icon there was a message saying Defender was turned off at the Group Policy level and was controlled by the Administrator. As it is my own PC I assume I am the Administrator, but this did not seem to make any difference. I searched for Group Policy but nothing was found.
How can I turn Defender back on?

Answer:Cannot Turn Windows Defender back On

Hello Punchy, and welcome to Eight Forums.

Did you install a 3rd party AV program?

If so, they will often disable Windows Defender by default, and Windows Defender cannot be turned on until the 3rd party program is uninstalled.

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Good evening Folks,
Browsing through the threads it seems the advise from the senior members is to use Malwarebytes instead of Window Defender. Is this the case, or should I use both, one at a time? How do I turn off Window Defender, I can't find the option in the program window. thanks for the continuing education.
Best Regards,
Gil777t
 

Answer:Solved: Turn off Windows Defender?

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Hi, My grandparents recently bought a new computer running Windows 8 that came with a couple of free months of norton antivirus. We don't want to pay for the subscription now so I just want to use the inbuilt Windows Defender antivirus (I have been told that this is decent enough for antivirus/spyware/malware etc). I uninstalled Norton using add/remove programs in control panel but now when I try to turn on Windows Defender it gives an error message. Im not with the computer now so I can't say exactly what the error was but it had something to do with not being able to turn on because there is another antivirus program running (but there isn't).

Any help on what I can do to get Windows Defender to turn? They currently have no protection at all :/
 

Answer:Solved: Windows 8 Defender won't turn on

If you uninstalled the trial version of Norton that came in that Windows 8 computer, you need to download and save and then run its removal tool so it can find and remove the leftover file and registry "debris" from the uninstall.

----------------------------------------------------------
 

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I just uninstalled Mcafee Security Suite following their instructions for Win 10.  I now can not get Defender to turn back on.
I get a pop up saying another program is disableing Defender.
 
I was not aware Emsisoft would block/disable Defender. At the moment Emsisoft is the only security program I have left running.
 
Any ideas?

Answer:Windows Defender will not turn back on.

Since Windows 8/10 Defender includes anti-virus protection, it typically is disabled by the installation of a third-party anti-virus program...in your case McAfee Security Suite probably disabled it to begin with. However, uninstalling McAfee was not enough. Emsisoft Anti-Malware is an antivirus platform that includes anti-malware protection...EAM combines its technology with Bitdefender Anti-Virus. Windows Defender will remain disabled until that EAM has been completely uninstalled.After removal of the third party anti-virus, Windows 8/10 Defender needs to be activated if you choose to use it. When uninstalling the third-party anti-virus Defender should automatically turn on. In some cases you may receive a message indicating your system has no protection...click here to turn on Windows Defender. If not, and Defender remains disabled, you will need to manually turn it on.Since you are using Emsisoft, there is no need for Windows Defender.

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Windows defender turned on when i didnt need or want it to. there Isn't a turn off button other than in gpedit.msc.
win+r to run gpedit.msc, says it cant find it. I even looked where the msc should be and its not there.

Answer:No gpedit.msc, cant turn of windows defender.

Group Policy and gpedit.msc are only in Windows 10 Pro and above. If the version is shown as Windows 10 with no other designation it will be the home edition that does not have it. It cannot be added. It is not just gpedit.msc but the infrastructure that supports it that is missing.

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I am unable to turn on Windows defender. Using a hp pavilion entertainment pc. Pavilion dv5 running Windows Vista sp2
Error code 0x800705b4
I believe there are strange things happening to this notebook. I also can't open the Windows sticky notes... about to run malware bytes, spybot, rkill and Windows essentials of I can get these programs to work....
Any help would be appreciated

Answer:unable to turn on Windows defender

Did you check to make sure the Windows Defender service is running?These are instructions for restarting Windows Defender if it has been stopped...How to Start/Stop Windows Defender serviceTo start (enable) a service, press the WINKEY + R keys on the keyboard or click the Start Orb > Run...,and in the Open dialog box, type: services.mscClick OK or press Enter.Note: You can also click the Start Orb and in the Search Box, type: services.mscWindows Services will open:Click the Extended tab at the bottom to view all the info on your services.In the Services applet, scroll down the list and find the Windows Defender service.Double-click on the name of the service to open the Properties page.In the Properties Window > General Tab that opens, click the "Start" button if it is stopped.From the drop-down menu next to "Startup Type", click on "Automatic".Click "Apply", then "OK" and close any open windows.Also see:Windows Defender is turned off or not working

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i would like a help on this. when i want to turn it on, it pop up a message saying "this application is turned off by group policy". so if any one has come across this kind of a problem or knows how to fix it can i have a brief on that

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i am unable to turn my windows defender on and i keep getting error message 0x800106ba
 

Answer:windows defender wont turn on

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I am trying to turn on Windows Defender with no success. I click on the works turn on Windows Defender but it just keeps going on and on. I tried downloading it again with the wizard but it said it said the wizard was interrupted and try again when I do it does the same thing. i tried downloading it from the Windows site and after downloading the pop up said "You do not need to install this software because Windows Defender is included in Windows Vista (I have Windows 7) You can access Windows Defender from the security section of the Windows Control Panel". Again, I tried this but when I click on the words "turn Defender on" it just keeps going on and on without doing anything. HELP!
 

Answer:Solved: Can't get windows defender to turn on

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Hi Guys,

Running windows 10 with the build in windows defender.
recently (in the last few days) a message keeps popping up that no virus software is running and that I should turn it back on.
I tried, but the option to turn it back on is greyed out, I ran a Microsoft antivirus scanner and it came back clear.
I obviously need to turn Defender back on, but have no clue how to

Can anyone point me in the right direction please?

Cheers for reading

mad-martin
 

Answer:windows defender won't turn back on

found the problem

I installed Spybot S&D. because of that Windows thinks there is another anti virus software installed and disables Defender. Uninstalling Spybot S&D automatically enabled Defender again
 

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I just got my Toshiba laptop Tuesday and I'm having a hard time turning Windows Defender on. I saw the tutorial, but I'm almost totally blind and I use the Jaws screen reader, so I can only use the keyboard and not the mouse.

I pressed the windows key, which used to bring up the search box, but now does something weird, and started typing defender, which brought up the Windows Defender app. When I pressed enter, a dialog box, or what sounded like a dialog box, popped up and said Windows Defender has been turned off, but there's no option to enable it, just a message that says to go to action center but doesn't do anything and a close button. I tried to go to Action Center, but it was really confusing. I found something that let me turn it on, but it still says it's off when I go to check it.

Not sure if the Norton the laptop came with is balking me and not letting me use Defender or what. I tried to uninstall the truckload of programs from Norton using add or remove programs, but I assume it opened Norton to do the uninstall because I heard Norton internet security dialog, but that was all it said. I'm not sure if it was uninstalling or what, as Norton doesn't work at all with Jaws. I called Toshiba because I was having a few more problems that they were able to fix, but when I asked about Defender, they transferred me to their paid tech support people who wanted to charge me an arm and a leg to do remote access, when all I wanted were instructions on how to do it my... Read more

Answer:How to turn on Windows Defender using the keyboard

When you have a third-party antivirus installed, Windows Defender is turned off. If you want to turn it on, you must remove other AV software. Running two AVs is a bad idea, and Microsoft won't allow it with Defender.

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I am running Windows 7 Pro and have downloaded Microsoft Security Essentials.

Thnere is just no way can I turn Defender ON and having Googled everywhere and followed all the recommendations, I have given up on it! From the number of hits on Google, this is obviously a common problem ...........

Point is, do I really need it with MS essentials installed? This seems to cover most of the security issues so maybe Defender is not necessary any more ........ ?

Thanks in anticipation .....................
 

Answer:Solved: Cannot turn Windows Defender ON

Answered my own Question being Security Essentials automatically shuts down Defender!

Duh!
 

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Loaded a new HP Laptop with Malwarebytes premium three days ago. Today I checked Windows Defender (WD) and a message comes up saying WD has been turned off. With an instruction that if using additional AV software to go to "Updates and Security" and check that apps status. Going there I don't see how to check the status and WD status show enabled but grayed out and non-responsive,

I disabled Malware bytes and rebooted and checked WD and got the same message. I checked the forum and saw a message saying that possibly WD goes into limbo and MS is aware of issue and possibly with new 10 version out Aug 2nd problem would be solved (today is Sept 18, I received computer 3 days ago and windows is on automatic update so am assuming computer has anniversary system). On my previous laptop WD and MB played will together from day one with no compatibility issues. Any suggestions?

Answer:Windows Defender will not turn on even with Malwarebytes disabled

First be sure there are no trial A/V programs running, sometimes on a new machine they are included
with all the other bloatware.

Check to see if another A/V is installed by going to control panel > programs and features.
If you do find one listed there please post the exact name of it, someone will post instructions
on how to remove it cleanly.

This tutorial will show you how to turn Defender on.
Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

You are correct MBAM still does play well with Defender, I use both on my lappy also.

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Computer : Lenovo Ideapad y510p 
 
OS : Windows 8.1
 
Hey guys, I recently uninstalled avast and I cannot seem to be able to turn on windows defender. Whenever I try to do this on the Action Center, it just redirects me to the Win32 file. Any advice on what I should do? I would really prefer to not reset or refresh my computer. To uninstall avast, I used an official uninstaller to get rid of all the folders, as opposed to using the one built into avast.

Answer:Windows Defender will not turn on, keeps redirecting me to win32

Welcome,
I would consider the uninstaller in Avast or one on their site the 'official' uninstaller. Anything else might uninstall more than necessary.
If a reinstall of Avast doesn't correct the problem after you use their uninstaller then a reset or refresh may be the only way back.
Keep us posted

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How do we stop being the notifications to turn on Windows defender in the action center?

Answer:stop being the notifications to turn on Windows defender

Hello Gman,

It's recommended to leave Windows Defender and real-time protection turned on to help keep your system protected.

https://www.tenforums.com/tutorials/5...dows-10-a.html

https://www.tenforums.com/tutorials/3...dows-10-a.html

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I have Comodo's free protection installed. Since I installed Windows 10, I keep getting a periodic pop-up message at the lower right of my screen telling me that both Comodo Defense + and Windows Defender are turned off. When I go to the Security and Maintenance window, both programs are shown as Off, but I can't turn on either or both of the programs - all of the options at the bottom of the window are greyed-out except Close. When I check the status of Comodo protection, everything is said to be working; there is no indication that Defense + isn't working. Is the pop-up message a glitch and Defense + is actually working, or are both programs in fact off? Comodo has not responded to my questions about this. Thanks.

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I just uninstalled the trial version of Norton and I am unable to turn on Windows Defender. I have seen this problem repeatedly in the forum, but I'm still not sure how to get it corrected.
Please note that I am very Windows 8 illiterate, so no explanation can be too basic .
Thank you in advance!

Answer:How to turn on Windows Defender after uninstalling Norton

drealeade,

Got to ask you a few questions...

How did you uninstall the trial version of Norton?
Was it from Control Panel > Programs and Features?

Did you use the Norton Removal Tool to make sure all of it is gone:
https://support.norton.com/sp/en/us/...rProfile_en_us

Is there any other antivirus program installed on the computer that may conflict with Windows Defender?

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Hello,

how many miracles does it take to turn off windows defender...
It seems to be easy through the tools tab as folks told me but if I click that nothing pops up, like... it just doesn?t work.
Just did a clean install to get everything back on rails but this doesn?t work.
Also why does it take ages to get things updated in windows anyway (like defender, windows update).

Another question: is it wise to install SP1 right away from a downloaded installer or should I do that through the automatic windows update

Answer:Windows defender canīt access tools tab to turn it off

Hi Auk, welcome to 7F!

You don't mention how many miracles you've used up, but have you seen this?

Option One: Windows Defender - Turn On or Off

If you are using MSE for anti-malware protection, Defender will be automatically turned off.

To answer your last question, You can update either way, but in my opinion it would be easier if you allowed it to happen automatically. You really should try to get it done as soon as possible in order to protect your system.

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I have a brand new computer just a week old and since my latest insider update (14971) I cannot turn on or update "Windows Defender". I get this error when I attempt to turn on Defender in Settings:
THIS APP IS TURNED OFF BY GROUP POLICY
to allow this app to run, contact your security
administrator to enable the program via group policy

Answer:Security wont allow windows defender to turn on

I need a FIX: Security Administrator has disabled Windows Defender and will not allow me to turn it on. I am the computer's administrator and the only one who uses the PC. I have checked all of the User Accounts and everything seems normal. Please help I have no AV on the PC for they will not install. So I am flying blind and with one wing

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Greetings,

My name is Caleb, and i'm having some issues regarding my Windows Defender. When I go into Action Center and try to turn on Windows Defender and Windows Firewall, it doesn't want to turn on.

When I click on "Take Action", and click on "Turn on Windows Defender", User Account Control then prompts me if I want to run this application. I click yes, after doing so, Windows Defender still doesn't become enabled.

I do have malwarebytes installed on my PC, is this causing some sort of conflict between Windows Defender and malwarebytes since its a AV?

Answer:Windows Defender wont turn on. Conflict perhaps?

Do you have now or ever had any other antivirus installed ?

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I have a brand new computer just a week old and since my latest insider update (14971) I cannot turn on or update "Windows Defender". I get this error when I attempt to turn on Defender in Settings:
THIS APP IS TURNED OFF BY GROUP POLICY
to allow this app to run, contact your security
administrator to enable the program via group policy

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Just got my thinkpad today in the mail. I went about uninstalling the included Norton antivirus trial with the intention of turning on windows defender. I uninstalled Norton in the control panel and then used Norton's removal tool just to make sure.
 
When I tried to turn windows defender on in action center nothing happened. No messages or pop ups or anything. After some googling I was able to edit a defender registry file to let me turn it on. When I try to turn it on now the following happens:
 
Link to picture
 
How can I turn on defender?
 
Moderator note; picture(s) converted to link(s) About Posting Pictures In The Forums

Answer:Thinkpad Yoga - Cant turn on Windows Defender

Did you check if the Defender service is Started and set to Automatic? Here is a similar thread from Microsoft Forums that you can refer:http://social.technet.microsoft.com/Forums/windows/en-US/642a5e21-2d7f-4122-b26e-811cfe54a89d/window... Thanks!HarryNorton Support

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My laptop had Macafee installed for a trial period and that ran out today. I have tried to turn on Windows defender but everything I click on brings up a pop up message stating that Defender has been turned off. It doesn't have information about turning it on again nor can I click on anything. I have tried various ways of getting to defender ( action centre, settings, etc)but I always come back to this message. I would be grateful for ANY help.

Answer:Windows defender is turned off on my new laptop and I can't turn it on.

Uninstall Mcaffee entirely, download and install Microsoft Security Essentials (free antivirus), back it up with a weekly scan with Malwarebytes Antimalware.Make sure you decline the Pro trial that will be offered/ticked when you install Malwarebytes.
http://windows.microsoft.com/en-GB/windows/security-essentials-download
http://www.malwarebytes.org/products/malwarebytes_free/

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When I first turn on my computer, I recieve an error message: Application failed to initialize: 0x800106ba. A problem caused Windows Defender Service to stop. To start the service, restart your computer or search Help and Support on how to start a service manually.

So when I restarted, I got the same error message and when I searched on Help and Support, I couldn't get accurate results. How do I get my Windows Defender to operate? It was running fine last week except it needed an update that I neglected before. Thanks in advance.
 

Answer:Windows Defender won't turn activate on startup

Reinstall it . .
 

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When I started up this morning, a bubble message popped up that Windows Defender is turned off.  When I turn it on, it is immediately turned off.  I was using Bitdefender Internet Security until last week.  When Microsoft pushed me into updating to 10, it removed / turned off Bitdefender and switched to Windows Defender.
 
I tried to run Malwarebytes (have the paid version), but it refuses to open.
 
Ran current version of TDSS Killer and and scan found no threats.
 
What do I do?
 
Thank you.

Answer:Windows Defender off at startup this morning. Won't turn on.

You can roll back to your previous Windows OS....you have 31 days to do that.
 
Have you installed any programs or browser add-ons since Windows 10 was installed? Have you used a p2p program such as uTorrent?
 
Change your mind about Windows 10? Here's how you can roll back - CNET

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Hi, i got a Lenevo Z510 model.. i updated the Mcafee and then the mcfee gives a messae that the its turned off and when iam turning it on, it again within a sec. Also i am unable to turn on the Windows defender . I also tried from teh action center, it says that the mcafee status is snoozed. awaiting for a resolution..

Answer:Unable to turn on Mcaffe nor windows defender

Hi Ismail,
 
Welcome to Lenovo Community Forums!
 
I?m sorry to hear that the McAfee and ?Windows Defender? is not turning ON after updating McAfee Antivirus Software, I suggest you to try turning ON ?Windows Defender? using ?Windows Services?. Below are the steps to check and resolve the issue:
 

Please press ?Windows key + R? from keyboard.
Then type ?services.msc? without quotes in the ?Run? Window and press Enter Key.
Now search for ?Windows Defender Service?.
Double click on the service to open the settings, make ?Startup Type? to ?Automatic?.
Restart the computer and then check how it works.

Hope to hear back soon
 
Best Regards

Shiva Kumar






Did someone help you today? Press the star on the left to thank them with a Kudo!If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.Follow @LenovoForums on Twitter!

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Hello,
I have an issue, I cannot open/run firewall or defender. There was some kind of virus or something on my computer. I was able to get rid of it using the windows program Microsoft Tech helped me with, but now I am unable to turn on the firewall. I am getting
error code 0x8007042c. Also defender says it is on, but I can not update.
I have tried to recover to and earlier time, but it wont do that either
I also tried to run the registry editor, and again I get an error, it says windows cannot find 'regedit.

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Hi.

I am trying to turn back on my Window's Defender and turn off my Norton 360.

Is there anyone who may be able to help me?

Thanks

Rob

Answer:Can't figure out how to turn my windows defender back on

Hello Rob, and welcome to Eight Forums.

Whenever a 3rd party AV program is installed, Windows Defender is automatically disabled by default.

When you completely uninstall Norton 360, you will be able to turn back on Windows Defender.

Download and run the Norton Remove and Reinstall Tool

Windows Defender - Turn On or Off in Windows 8

Hope this helps,
Shawn

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Loaded a new HP Laptop with Malwarebytes premium three days ago. Today I checked Windows Defender (WD) and a message comes up saying WD has been turned off. With an instruction that if using additional AV software to go to "Updates and Security" and check that apps status. Going there I don't see how to check the status and WD status show enabled but grayed out and non-responsive,

I disabled Malware bytes and rebooted and checked WD and got the same message. I checked the forum and saw a message saying that possibly WD goes into limbo and MS is aware of issue and possibly with new 10 version out Aug 2nd problem would be solved (today is Sept 18, I received computer 3 days ago and windows is on automatic update so am assuming computer has anniversary system). On my previous laptop WD and MB played will together from day one with no compatibility issues. Any suggestions?

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Hi,

I'm running windows 7 home premium and recently performed a system restore.

Ever since then windows won't let me turn on my antivirus program "McAfee Security Centre". The problem of no anti-virus comes up in the action centre but when i press the 'turn on now' button nothing happens. Similarly, if i try to turn on the antivirus within McAfee it doesn't stay on.

I can't uninstall and reinstall McAfee because the program came with my computer and i don't have a disc which supports it.

Thanks, Please help!!!
 

Answer:Solved: Windows Action Centre Won't Let me Turn on McAfee

The thread is marked Solved.......but I will assume that was an accident, if not, post back and tell us please.....

http://free.antivirus.com/hijackthis/

Save Hijackthis.msi to your desktop. DO NOT just press run from the website
Double click on the HJTinstall.exe icon on your desktop.
By default it will install to C:\Program Files\Hijack This.
Continue to click Next in the setup dialogue boxes until you get to the Select Additional Tasks dialogue.
Put a check by Create a desktop icon then click Next again.
Continue to follow the rest of the prompts from there.
At the final dialogue box click Finish and it will launch Hijack This.
Click on the Do a system scan and save a log file button. It will scan and then save the log and then the log will open in Notepad.
Don't use the Analyse This button, its findings are dangerous if misinterpreted
Click on "Edit > Select All" then click on "Edit > Copy" to copy the entire contents of the log.
Paste the log in your next reply.
DO NOT have Hijack This fix anything yet. Most of what it finds will be harmless or even required.
don't forget this second part

Please also do this:

Open Hijack This and click on the "Open the Misc Tools section" button.
Click on the "Open Uninstall Manager" button.
Click the "Save List" button. After you click the "Save List" button, you will be asked where to save the file. Pick a place to save it then the list should open in n... Read more

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Hi there,
 
I keep getting error 577 when I try to turn on my windows defender this is getting very frustrating Please help!!
 

Answer:Windows Defender will not allow me to turn on my antivirus or malware protection

it keeps telling me windows defender is turned off and being managed by my system administrator

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