Computer Support Forum

Windows Defender refuses to scan inside exe file on one win10 box?

Question: Windows Defender refuses to scan inside exe file on one win10 box?

I've got two Win10-64 boxes running 'Feature update to Windows 10, version 1709 and the latest KB4056892 2018-01 cumulative update for windows 10 version 1709 x64-based systems.

With one box, I can right click on the latest firefox 64 bit exe installer and can 'scan with windows defender' and it will scan 598 files. On the other, the scan of the same file shows '1 files scanned'?

I just can't figure this out? How can I resolve this? It makes me question whether Windows defender is working at all?

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Preferred Solution: Windows Defender refuses to scan inside exe file on one win10 box?

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I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

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I just finish off using my CA security suite to custom scan 1 file, but the mesg. didn't say whether it was scanning the file itself, or the files within the RAR file.

So how do you know the anti virus software is doing its job?
 

Answer:when an anti-virus scan a RAR file, should it automatically scan the inside?

Check the options or settings within CA to see if it is set to scan inside compressed files, and if it isn't, turn it on. An AV that doesn't scan inside compressed files is about as worthless as a screen door on a submarine.
 

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Hi,
In Windows 7 I used to be able to right click on a file and one of my choices was to scan with Microsoft security essentials, but that's no longer in my right click menu.

How do I go about doing a manual scan on just one file using Microsoft's (I guess it's now Defender) Security Essentials in Windows 8?

Thanks,

Answer:How do I do a manual scan of one file with Windows defender and Win 8?

I don't think they have built in.

MS themselves describe it as basic security - and that 3rd party apps. are much more complete .

It is only intended for people who otherwise wouldn't have anything at all.

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In reference to this thread here: Windows Defender Cascading Desktop Context Menu - Create in Windows 8

Is there a way to get a context menu to scan individual files and/or folders like MSE does in Windows 7 and prior?

Answer:Windows Defender context menu - scan file(s)/folder(s)?

Hello LovingWindows,

There's a method, but it's not the same like MSE at all. It can only scan folders from the command prompt that only shows if something is found. What it does show is not very helpful either. I'm still looking into a better way, but have found none yet.

It's really not worth using, but you could still do a "Custom" scan in Windows Defender in Windows 8, to then be able to select what specific folders you would like to scan and see in Windows Defender.

Hope this helps some,
Shawn

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currently, I'm using CA Security suite, I'm wondering if I can use the anti-virus to scan the inside of a RAR file, which composed of dozens of files, and confirm if there is a virus inside the packed rar file or not
 

Answer:Can anti-virus scan the inside of a RAR or zip file?

NOD32 does... perhaps the CA cra--- uhmmm... product has an option to scan inside archives that needs to be enabled (seems like it should be on by default; it is with NOD32).
 

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I got a powerpoint in an email attachment, virustotal reports a zip file inside...
 
1.) Is there always a .zip file inside powerpoints?
2.) What malicious benefit could a zip file provide?
3.) How can I alalize the ZIP compressed archive (2.5%)
 
ssdeep
1536:d98NvL6Ra3cQewv87TClJ2HsrwRKbbEBbfnCY9Gbt09bfmh4jVuJTVxZbbFH5T14:dfJR4EBfnCK+JTVxZbb59q5/nfcQtb
 
TrID
PowerPoint Microsoft Office Open XML Format document (97.4%)ZIP compressed archive (2.5%)
 
F-Prot packer identifier
appended
 
ExifTool
SharedDoc................: No
Title....................: MEMORY
HyperlinksChanged........: No
TitlesOfParts............: Office Theme, MEMORY, What is Memory, Memory involved three fundamental processes, The stage model of Memory, Sensory Memory, Sensory Memory, Sensory Memory, Short-Term Memory, Short-Term Memory, Short-Term Memory, Short-Term Memory Working Memory, Long-term Memory, Long-Term Memory, Long-Term Memory Transforming or encoding memory, Long-Term Memory Types of Information, Long-Term Memory Subsystems, Maintenance Rehearsal , Elaborate Rehearsal , Retrieval , PowerPoint Presentation, PowerPoint Presentation, Encoding Specificity Principle , Forgetting , Forgetting
LinksUpToDate............: No
LastModifiedBy...........: RLLocal
Application..............: Microsoft Office PowerPointZipFileName..............: [Content_Types].xml
CreateDate...............: 2013:03:19 17:24:18ZZipRequiredVersion.......: 20
PresentationFormat.......: On-screen Show ... Read more

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Hi All

Trying Windows Defender to see if I can get used to it and how it affects performance and such, but after each scan popups and says items skipped during scan, my exclusions for Secondlife game, which is required to have it run properly.

Should I just ignore that?

Games I play regularly are
Battlefield 4
American truck Simualtor
Secondlife

sites visit regularly is here, neowin.net, guru3d at times, dslreports at times, local news, and local newspaper, adblocked enabled in Edge.

previously for the last few years used Avast Free, but kinda feeling like every month of program updates, and then more bugs, then another update is getting time consuming to trouble shoot, though i'll probably have to leave it running on Mom's PC since she does banking, and other Windows 7 PC not sure on using MSE on that one, I might use it

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Hey all.
 
I was running a full scan on my Win8 system using Defender.  After 15 minutes, scan was three-quarters completed with no problems, so  I left the computer for five minutes.  When I returned, Defender had switched over to a Quick Scan in order to finish up. 
 
No threats found, either by Defender or by MBam, which I ran afterwards.  But is it unusual for Defender to switch from Full to Quick scan mid-operations? 

Answer:Windows Defender Full Scan Switches Over To Quick Scan

I never heard of that happening before so I'm not sure how it occurred.There are three types of scans offered by Windows 8/10 Defender and most other anti-virus/anti-malware programs:Quick Scan only checks the areas of your computer most likely to contain malware...the most prevalent and common places where malware typically hides. The length of time for performing a Quick scan will vary but it generally takes about 15-30 minutes so they can be performed daily.Full Scan is much more comprehensive since it scans the entire hard drive (all folders/files) which can number in the thousands. The length of time for performing a Full scan will also vary but because it is so comprehensive, this type of scan can take several hours. Most Full Scans can be scheduled to run late at night when not using the computer so you can perform a weekly scan without having to monitor it.Custom Scan allows the user to select any files and folders on the hard drive to be scanned.In most cases when performing routine security checks, only a Quick Scan is needed since it checks the areas of your computer most likely to contain malware...the most prevalent and common places where malware typically hides. A Full scan is generally recommended only for heavily infected systems.

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Hello!

I don't know since when, but the Windows Defender in my PC has been turned off....
Is it due to my antivirus (Microsoft Security Essentials and Avast)? I cannot even turn it on...

I suddenly discovered this and am quite worried that my computer may be vulnerable to attcks...

Please help...

Thanks in advance
 

Answer:Windows Defender turned off and refuses to start

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I'm just curious if Malwarebytes coupled with Windows defender is enough. I would like to add I use the internet quite a bit so I would like solid protection. I know windows defender doesn't have the BEST detection rate but I would hope Malwarebytes could pickup whatever windows defender left. What do you guys think?

Answer:Is Windows defender and Malwarebytes pro enough? (Win10)

the majority of "veterans" on this site recommend and use that combo, so I switched to it a couple of months ago, and have had ZERO issues...and I use the internet/email/web stuff ALOT, for both personal and professional reasons..

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I have been getting the same update for days now and Not once have I gotten a "failed to update" message. The update is KB2267602. Why would I keep getting the same update over and over again with no fails?

Answer:Win10 Windows Defender Definition Help

stadnykc said:

The update is KB2267602. Why would I keep getting the same update over and over again with no fails?



Welcome to TenForums @stadnykc

KB2267602 is a generic KB number used for all Defender definitions updates. The full name for each download will include the definitions version in addition to the KB number, like:
Windows Defender update KB 2267602 Definition 1.235.3328.0
The KB number remains the same, but the definitions number would have been different for each of your updates. Each one was a newer version.

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I'm just curious if Malwarebytes coupled with Windows defender is enough. I would like to add I use the internet quite a bit so I would like solid protection. I know windows defender doesn't have the BEST detection rate but I would hope Malwarebytes could pickup whatever windows defender left. What do you guys think?

Answer:Is Windows defender and Malwarebytes pro enough? (Win10)

the majority of "veterans" on this site recommend and use that combo, so I switched to it a couple of months ago, and have had ZERO issues...and I use the internet/email/web stuff ALOT, for both personal and professional reasons..

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In the latest Fall Creators Update, does Windows Defender have the ability to scan for Rootkits which are hidden during boot time?

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Thanks to this site after reading the Best Practices & FAQ page I now have a better understanding of the different kinds of threats out there. 
 
One question however remains, having activated the Windows defender on my Win10 do I still need an anti-malware or another protection to cover the different kinds of threats?
 
Assume I'm comfortable with the level of protection and risks incurred on having one single anti-virus (eg Microsoft in this case). 

Answer:Do I need Anti-malware with Windows defender on Win10

...having activated the Windows defender on my Win10 do I still need an anti-malware or another protection to cover the different kinds of threats?...Yes.Although Windows 8/10 Defender provides some anti-malware protection...it is weak, meaning it does not provide comprehensive protection and cannot prevent, detect and remove all threats at any given time. This is true for most anti-virus solutions. Anti-virus and anti-malware programs each perform different tasks as it relates to computer security and threat detection. Essentially, they look for and remove different types of malicious threats.In simplistic terms, Anti-virus programs generally scan for infectious malware which includes viruses, worms, Trojans, rootkis and bots.Anti-malware programs generally tend to focus more on adware, spyware, unwanted toolbars, browser hijackers, potentially unwanted programs and potentially unsafe applications. Anti-virus and Anti-malware solutions with anti-exploitation features protect against zero-day malware, drive-by downloads, exploits and Exploit Kits.Therefore, you need both an anti-virus and an anti-malware solution for maximum protection.The Difference Between Antivirus and Anti-MalwareMalware Remover vs. Antivirus Software: What's the Difference?Antivirus and Antispyware Software: What's The Difference?What Is the Difference Between Antivirus & Antispyware?Use Anti-Virus and Anti-Spyware SoftwarePlease read Supplementing your Anti-Virus Program with Anti-Malware Tools for ... Read more

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I have been having an issue with Symantec Leaving my logs full with scan Omissions 99% of which are compressed. After doing considerable research I find symantec gives a nice list of possabilities and things to look into. Personally none of these fixed my issue, but it may yours. If Anyone has any Ideas to add to Symantec's offical list of reasons for scan omissions please do.---------------------------------------------The following is From Symantec @ http://service1.symantec.com/SUPPORT/ent-s...002073015235648Event ID 6Solution:This event is typically encountered when any of the following occurs: You scan a compressed file that contains a password-protected file. The decomposer engine cannot provide the password required to gain access to the file, so it will be omitted during a scan. You scan files that have been locked for access by the operating system and access cannot be released to the scanner because the file is in use. You scan files that are recursively compressed to a depth that is more than the scan engine is set to scan. By default, the scan engine is set to scan a maximum depth of three levels (for example, a zip file contained within a zip file contained within another zip file). You scan files with LH7 compression, which is not a supported format. These compressed files commonly have an .lzh extension, and they are omitted by the scan. You scan files that are in use by another user. This is most commonly seen when you scan user directories and shared folders... Read more

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Hi to ALL,

I would like to know how to scan files or folder or drives with Windows Defender?

Thank you

Answer:Windows Defender - SCAN

As long as you have no third party anti virus program, Window Defender is active and running all the time. Do a search for Windows Defender in the charms bar or just type in the Start Screen then click it.

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I have set windows defender to scan every Wednesday at 8 A.M., which it does, but it always wants to scan at 3 A.M. every day too. Can some one help me?

Answer:Windows defender always wants to scan at 3 A.M.

There's a post here that may help you figure the problem out. The post also has some links to tutorials which may help.

Solved Can I schedule scans with Windows Defender? - Windows 10 Forums

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I set up a new computer with Windows 7. I set Windows Defender to run a scan every day at 2 AM, but as far as I can tell, it doesn't run the scan. It states that the last scan was run about a week ago. I rechecked the settings and Windows Defender states that it in on. I keep the computer in sleep mode at night. Any ideas what the problem is?

Answer:Windows Defender is on but does not scan.

Hello dbelling,

Welcome to Seven Forums.

It can't run if the comp is asleep. I can't check right now, but is there a task created in task scheduler for this? If so, you can right click on the task and select propeties and on the conditions tab, select wake the computer to run this task.

Hope this helps.

Gary

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If I download an exe file from someplace, does Defender scan the file immediately for possible problems or do I have to request the scan?
Alfred

Answer:When does Windows Defender scan?

Welcome to Windows TenForums, Alfred71.

I can only attest using IE11. Although not absolutely sure, I believe other browsers use the integrated download manager. Defender does indeed automatically scan any type of file that one downloads when finished.

Download Manager - Microsoft Windows

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I was under the impression that the Windows Defender scan was automatic.
How do I get Windows Defender to automatically scan without asking me to do it?

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Today my windows defender randomly popped up that it was turned off. This was weird so I went ahead and enabled it then tried to run a quick scan. Every time I run a quick scan it pops up an error and goes red again. At first it would keep disabling after enabling it after a few seconds but after a restart that no longer happens it stays enabled but if I try to scan it will again disable itself.
I've run quick and full Malwarebytes scan's and nothing comes up so I really don't know what the issue is. I haven't downloaded anything questionable either. The only thing that happened was yesterday in DayZ some hacker formed me to kill myself but I doubt some hacker in DayZ somehow infected my PC.
EDIT Just found out that also when I run a quick scan in malwarebytes windows defender goes red again. Says real-time protection is off and says data base is out of date when it goes red.

Answer:Windows Defender goes red when trying to scan.

Welcome aboard  Please follow the instructions in THIS GUIDE starting at Step 6.  If you cannot complete a step, skip it and continue.Once the proper logs are created, then make a NEW TOPIC and post it HERE  Please include a description of your computer issues, what you have done to resolve them, and a link to this topic.If you can produce at least some of the logs, then please create the new topic and explain what happens when you try to create the log(s) that you couldn't get. If you cannot produce any of the logs, then still post the topic and explain that you followed the Prep. Guide, were unable to create the logs, and describe what happens when you try to create the logs.It would be helpful if you post a note here once you have completed the steps in the guide and have started your topic in malware removal. Good luck and be patient.If HelpBot replies to your topic, PLEASE follow Step One so it will report your topic to the team members.

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Have Windows 8 using Windows Defender and after last update of Windows Defender now won't Scan. I get error message 0x800106ba.
Any suggestions?
 

Answer:Win8 Windows Defender Won't Scan

Also attempts to Scan turn Windows Defender off.
 

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I can run quick scan and in advanced scans, I can run full and custom scans.
When I click on offline scan, the system will ask me to save my work then click on scan. Then the system will ask if I want this app to make changes to your device to which I click yes. This should trigger the system to shut off and the offline scan should then run. The scan does not run!
I have run it many times up to last week and tried command prompt and powershell possible solutions gleaned from the web but no luck.
My windows 10 is fully updated and I have even tried downloading windows defender offline scan from Microsoft (64 bit).
Any comments appreciated.
 

Answer:Windows 10 Defender offline scan

I have no idea why, if it does work, why it isn't ... however, I'd highly recommend using a 3rd party offline scanner, if nothing else than to get a second opinion.
Welcome to PCReview
 

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I am using Vista Home Premium on my Acer laptop, and have found that Windows Defender does not automatically scan even though it is scheduled to do so.

It was fine up until I tried to install Vista Service Pack 1, and found that I lost my internet, so I uninstalled it. Since then, I have had the problem with Windows Defender - this may not be the case, but it is just a theory.

I have tried System Restore, but that didnt work - aparantely because you cannot use System Restore with Acer - Acer said I could set it back to factory settings but I dont want to go to all that trouble.

Any ideas or suggestions please?
 

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click hereWhen the windows defender icon appears in the task bar i click it and it recommends i run a scan as haven't run one for 3 days,ok no problem.But when i open it and click "start scan" i get the above error.i can still scan by clicking the scan button at the top and it works ok,i was just wondering why i get this error,and if anyone else has it.

Answer:Windows defender scan error.

Hi Acolyte, I don`t understand how you are getting a defender icon in the task bar since win defender does not show an icon in the task bar. It only appears if defender has detected something that should not be there. There have been a number of posts asking why there is NO icon in the task bar. I have created a shortcut on my desktop.

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Can I remove a program (Vosteransearch) with windows defender?

Answer:Scan system with Windows Defender?

Check : http://www.vosteransearch.com/how-to-remove/
Arnav Sharma | http://arnavsharma.net/ Please remember to click ?Mark as Answer? on the post that helps you, and to click ?Unmark as Answer? if a marked post does not actually answer your question. This can be beneficial to other community members reading
the thread.

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Hello guys.

Please tell me how can i disable this

When i press right click in a file show me option to scan if clean or no..How can stop it this?

Thanks

Answer:Windows Defender Scan Right Click

Hello Thanos,

You can use step 3 in OPTION ONE of the tutorial below to remove the "Scan with Windows Defender" context menu.

Scan with Windows Defender Context Menu - Add in Windows 10

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hi every one

recently you all gave me some help on scheduling a scan for windows defender, it has been working fine for some time
but tonight I had to scan manually because it was telling me that I was unprotected. What has happened to my
scheduled scan.

regards calmat

Answer:windows defender scheduled scan

Did you by chance install CCleaner? If so, you need to uncheck Windows Defender & MS Antimalware under the Applications tab. It cleans the logs out & makes Defender think it hasn't run a scan in a while.

Also, see this post:

Windows Defender

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Don't know if this is just me or not, but:

For the last month or so WD regularly hits me with the Yellow Warning Triangle to SCAN NOW. Sometimes twice a day. Sometimes days between these events. I don't know enough to be able to find the date/time of it's last scan. Not even sure if this history is what it should be:



Is this to be considered normal behavior? I would think it should scan autonomously without me having to run it manually.

I appreciate your comments, Thanks.

Answer:Windows Defender Scan Schedule?

If you use ccleaner be sure to uncheck the Defender box. It causes Defender to think it has not done a scan.

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On my Win 7 laptop, I have Windows Defender set to run a scheduled quick scan at 11 pm in the evening on a daily schedule. This scan never runs (even when the laptop is in use - the system idle option is not checked). When this scheduled scan is set up in Defender, is a Windows Task Scheduler task supposed to be created?

The Window Defender entry in Task Scheduler (under Microsoft not Microsoft / Windows in the Task Scheduler Library tree) does not have any tasks listed in the middle pane.

Defender is operating as expected otherwise - it performs both Quick and Full Scans manually.

Answer:Windows Defender Scheduled Scan does not run

Your system spec info lists Window Defender as your antivirus.
Window Defender is not an antivirus app in Windows 7.

As for your scheduled task issue, do you have history turned on? Maybe some info in there will help you figure out why it the task is not running. What happens if you manually ask the task to run?

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Today, the AU update installed on my computer and totally wiped out most of the customizing I had done. When I first installed Win 10, I used Brink's Remove Scan with Windows Defender UI .reg to remove the entry from the right click menu. It will still remove the entry but upon rebooting the computer, it reappears.. Any suggestions?
Ron

Answer:Remove Scan with Windows Defender

Regedit : HKEY_CLASSES_ROOT\CLSID\{09A47860-11B0-4DA5-AFA5-26D86198A780}

Delete that file , all the file and reboot ...never came back since i did like this ( sorry my bad english...easier in french to me

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I'm running Windows Defender Beta2 and every day I run the quick scan.I also do the full scan once a week.Every third day I get a warning 'you haven't scanned your computer for three days' and a suggestion to 'scan now.'Have I missed something? Is there a way to get rid of this false warning?Tristar

Answer:Scan, Windows Defender Beta2

I think it refers to a Full Scan.I actually set my PC to do a Full Scan everyday at the same time and on the odd occasion like a holiday, when I get back I get the same message about not scanning.

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windows defender schedule.JPG (88.4 KB)

I am trying to do a windows schedule scan, but when I set it I am getting this (see attached)
regards calmat

Answer:windows defender schedule scan

Hey Calmat,

For now, see if this may be able to help.

Windows Defender Scheduled Scan - Set Up in Windows 8

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Today, the AU update installed on my computer and totally wiped out most of the customizing I had done. When I first installed Win 10, I used Brink's Remove Scan with Windows Defender UI .reg to remove the entry from the right click menu. It will still remove the entry but upon rebooting the computer, it reappears.. Any suggestions?
Ron

Answer:Remove Scan with Windows Defender

Regedit : HKEY_CLASSES_ROOT\CLSID\{09A47860-11B0-4DA5-AFA5-26D86198A780}

Delete that file , all the file and reboot ...never came back since i did like this ( sorry my bad english...easier in french to me

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Just finished removing my paid AVG after so many years to give Defender a try for a while.

What I need to know is which file (if any) do I tell IDM to use to scan completed downloaded files?

Is "MpCmdRun.exe" the correct file?

Thanks.

Answer:How to Set IDM to scan downloads with Windows Defender?

Set it with mrt.exe or You probably need to scan it manually, from start menu, type: mrt
assume you have the file on desktop then see screen shot else select the folder where you have the downloaded file stored.

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For some odd reason WD keeps telling me I need to do a scan (it's in orange in WD) even though I do a scan everyday via the Task Scheduler. After any kind of scan it resets itself (I don't need to scan, green in color). Some time period later it tells me a scan is needed.

Is there some option that controls how often WD tells you to do a scan? Any ideas on this will be appreciated.

This started happening about a week or so ago. I don't have anything running on my system that IMO is doing this.

Answer:Windows Defender keeps telling me to Scan Now

Originally Posted by streetwolf


This started happening about a week or so ago..



Win+R - rstrui - OK







Originally Posted by streetwolf


even though I do a scan everyday via the Task Scheduler.



How exactly do you do that? Have you created your own task? If so, export and attach the XML.







Originally Posted by streetwolf


Is there some option that controls how often WD tells you to do a scan? Any ideas on this will be appreciated.



WD scans during periods of system inactivity. It's implemented as a part of automatic maintenance (search tutorials here). Unless your PC runs 24x7 without entering the inactivity state, scans are taken care of and there's no need to schedule your own scans, given you didn't mess with automatic maintenance in task scheduler.

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Hi. I have a HP Pavilion G6 and am currently carrying out a full scan using Windows Defender. So far the scan has taken 5 hours and has scanned 11,600 items. I was warned it might take some time, but this seems excessive! Any ideas? Thanks.

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I believe it's called adding it to the context menu.. I saw a registry hack for Windows 8 but i'm not sure how to do it in Windows 10.. I got used to using MSE in Windows 7 so now i'm lost not being able to right click a file to scan it immediately.. anyone know how to enable this in W10 Defender?

or should I just dump Defender totally for another Free antivirus? I was using Avast for awhile but MSE was less heavy on the resources so I went with that..

Answer:right click scan in windows defender?

Hi avemaria :
Welcome to tenforums.com!

Check this out:
(had wrong link first time!)

http://www.eightforums.com/tutorials...ndows-8-a.html

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I have a ~$2K PC w/ W8.1, and full scans with defender usually take about 5 mins. All of a sudden it takes 13 hours scanning and the completion bar is only at like %3. The # of files scanned keeps going up but I eventually canceled the 13 hour scan because I wanted to try reinstalling Spybot because I read other antivirus programs such as spybot might be interfering with defender all of a sudden even though I have never had a problem with both running for many years. Spybot was still scanning in normal time, about 8 mins for a full scan. Defender can still do a quick scan in like 13 seconds.
I uninstalled Spybot and Defender is even worse. It froze at # of items scanned:1.

Answer:13 hours windows defender scan at %3

edit NA edit

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Today, the AU update installed on my computer and totally wiped out most of the customizing I had done. When I first installed Win 10, I used Brink's Remove Scan with Windows Defender UI .reg to remove the entry from the right click menu. It will still remove the entry but upon rebooting the computer, it reappears.. Any suggestions?
Ron

Answer:Remove Scan with Windows Defender

Regedit : HKEY_CLASSES_ROOT\CLSID\{09A47860-11B0-4DA5-AFA5-26D86198A780}

Delete that file , all the file and reboot ...never came back since i did like this ( sorry my bad english...easier in french to me

9 more replies
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Hello guys.

Please tell me how can i disable this

When i press right click in a file show me option to scan if clean or no..How can stop it this?

Thanks

Answer:Windows Defender Scan Right Click

Hello Thanos,

You can use step 3 in OPTION ONE of the tutorial below to remove the "Scan with Windows Defender" context menu.

Scan with Windows Defender Context Menu - Add in Windows 10

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Since yesterday I've been having a tidyup of my system, taking programs off, and putting a few on. Because of this the pc has needed to reboot a few times to complete the process. On every occasion, the defender icon is showing with an exclamation mark in it, which when you click, tells me that I haven't scanned for 12 days, but the schedule is to run on Saturdays at 5pm every week.I've just run a scan to keep it happy, but its still telling me I've not scanned for 12 days.Any ideas? as I'm begining to get a little fed up with problems with this program.Thanks in advance.Steve

Answer:Every pc startup Windows Defender needs to scan

This is a pretty common Defender issue. What seems to help a lot of times is deleting the previous definition file. To do this go to Start>run>Msiexec /x {A5CC2A09-E9D3-49EC-923D-03874BBD4C2C} . Answer yes to the window that asks "Do you really want to delete this file?". Check for updates and Defender should update to the latest definition file.

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I have a ~$2K PC w/ W8.1, and full scans with defender used to take about 5 mins. All of a sudden it takes 13 hours to scan but the completion bar is like %3. The # of files scanned keeps going up but I eventually canceled the 13 hour scan because I wanted to try reinstalling Spybot because I read other antivirus programs such as spybot might be interfering with defender all of a sudden even though I have never had a problem with both running for many years. Spybot was still scanning in normal time, about 8 mins for a full scan.
I uninstalled Spybot and Defender is even worse. It froze at # of items scanned:1.

To make matters worse, Spybot is Error 404: Sorry, that page doesn't exist! when trying to re download it.
thankfully I have never had spybot or defender find anything bad but I scan with them like OCD a few times a day usually after web browsing and before logging into something (I never keep cookies unless logged in to something).

Anyway, WTF?
thanks.

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I thought I may have been hacked so I ran a custom scan of C drive which took approximately 24 hours to complete. checked on it several times up to about an hour before finish and scan seemed to being going OK. When completed (believe to be completed) there is no message saying anything about the scan such as no threats founds. At the bottom on the page it says last scan was a "Quick Scan". I fear maybe towards the end of scan something caused it to quit. Or perhaps defender just doesn't report as it should. I repeated the custom scan and had the same results. I also have a lap top, so I was not inconvenienced by the time it took. Anybody had the same results?

Answer:Windows 10 defender complete scan

Use a standalone antivirus tool like Zemana or Dr Web to check your PC for malware. Free Standalone On demand Antivirus Scanners for Windows

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I run a scan but as soon as I have rebooted and within an hour or so it asks me again? I receive the notification in the taskbar and Windows Defender turns orange and states I am unprotected. So far I have completed 3 clean scans today but after a reboot it is as if it does not remember that I have run a scan. I am running the latest Windows 10 pro.
Any ideas? Thanks in advance.

Answer:Windows Defender keeps asking me to complete a scan?

Try these Tutorials, they may correct your problem.

#1, SFC Command - Run in Windows 10 - Windows 10 Forums

If the problem still persists try this.

Use option 1.

#2, DISM - Repair Windows 10 Image - Windows 10 Forums

Good luck...

8 more replies
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Is anyone else having problems? because I've just had to fight to get it to stop scanning, then it froze my pc. It has never take that long before, infact, on a full scan it only takes about an hour. Would a re-install help, or am I better swapping to something else?ThanksSteve

Answer:Windows Defender quick scan has taken 5 hrs !

Try scanning with your AV disabled and after a clean up with CCleaner.

2 more replies
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Hello,

Having recently upgraded from Windows 7 to Windows 10, I had a question about using Windows Defender.

I've come to understand that Windows Defender automatically scans in the background every now and then. However, one of the many joys of Microsoft Security Essentials on Windows 7 for me was that I could manually scan any documents, items, and whatnot from external sources (e.g. files downloaded from the internet or copied from a USB-Sticks) before opening it. To do this manually on Windows 7 with Microsoft Security Essentials, one would right-click on the document and run a scan. To my understanding, Windows Defender on Windows 10 does not offer this option.

When looking for a way to make this part of the drop-down menu when you right-click a file, and when searching the web I came across this website: How to Add to the Context Menu in Windows 8

I know it's not intended for Windows 10, but I figured that since all the Folders were in the same place I would give it a go.

After following the instructions and restarting my laptop I found that in the drop-down menu when you right-click a folder, it now shows that I can scan with Windows Defender, which is great! [see following image]:


Yet, when I click on Windows Defender, I get the following error:


I presume this means I have done something wrong in the command However, I cannot for the life of me figure out what that would be.


Also interesting to note is the following:


As you... Read more

Answer:How to let Windows Defender scan manually?

There's a tutorial here for Win 10.






While you must be signed in as and administrator to be able to add or remove the Windows Defender context menu, all users will be able to use the context menu.



Windows Defender context menu - Add in Windows 10 - Windows 10 Forums

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I believe it's called adding it to the context menu.. I saw a registry hack for Windows 8 but i'm not sure how to do it in Windows 10.. I got used to using MSE in Windows 7 so now i'm lost not being able to right click a file to scan it immediately.. anyone know how to enable this in W10 Defender?

or should I just dump Defender totally for another Free antivirus? I was using Avast for awhile but MSE was less heavy on the resources so I went with that..

Answer:right click scan in windows defender?

Hi avemaria :
Welcome to tenforums.com!

Check this out:
(had wrong link first time!)

http://www.eightforums.com/tutorials...ndows-8-a.html

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hi i am trying to stop defender doing auto scans which seem to happen about 7 pm aus time which screws up my tv recordings for some reason
i would like to get it to scan early morning but cannot seem to find where to change the time it scans in win 8

thanks brad

Answer:windows defender auto scan

It runs as part of Automatic Maintenance, which IIRC runs daily when your computer is idle.

What time is set in Action Centre > Maintenance > Change Maintenance Settings?

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I've been using a clean install of W8 Pro for a couple of weeks now and while I have installed some of my usual programs I have not yet installed any standalone AV, firewall, or other "Security" programs. Late last night I decided to try a full scan for the first time, left it running and went to bed. The scanned "file count" was increasing rapidly as one might expect and while the green "progress bar" was filling it was happening quite slowly (I didn't watch long enough to see if there ever was any indicator showing "% completed" or "% remaining "...)

This morning there was absolutely NOTHING on the screen, no messages, no alerts, no "results" or "problems found" or even any indication that the scan itself ever completed...? (I still pretty much use the "desktop" with the bottom taskbar for now and haven't done much playing with Metro Tiles yet ). When I open Defender I cannot find any "scan history" records either...I understand that Windows strives to maintain itself "automatically" for the majority of users that never care to even know what really goes on behind the scenes, but I relish getting into the cybernetic "nuts and bolts" of it and ? if not having way more control of things, at least knowing what's going on (or "what happened")

Surely there must be a way to make it all more transparent..?
Philip

Answer:Windows Defender where are the Scan Results?

Hello Philip,

The Windows Defender scan results log files in the folders below are encrypted and cannot be viewed.
"C:\ProgramData\Microsoft\Windows Defender\Scans\History\Results\Quick"

"C:\ProgramData\Microsoft\Windows Defender\Scans\History\Results\Resource"

However, you can view Windows Defender "Operational" events in Event Viewer (eventvwr.msc) under Applications and Services Logs -> Microsoft -> Windows -> Windows Defender.

Hope this helps,
Shawn

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Relevance 59.04%

It seems like I remember MSE under Windows 7 scanned downloaded files and showed a brief message sayint that after the download.

Since MSE is not in Windows 8, I wonder if Windows 8 scans downloaded files and Outlook emails?

Thank you.

Answer:Windows Defender Scan Downloads

Hello JJG,

Whenever you download a file from within the IE download manager, a security scan is performed on it using the SmartScreen filter.

Any file that is opened in Windows 8 will also be scanned by Windows Defender and filtered by Windows SmartScreen by default.

If one has a 3rd party AV program install, then it may also scan emails and downloaded files.

Hope this helps,
Shawn

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Just finished removing my paid AVG after so many years to give Defender a try for a while.

What I need to know is which file (if any) do I tell IDM to use to scan completed downloaded files?

Is "MpCmdRun.exe" the correct file?

Thanks.

Answer:How to Set IDM to scan downloads with Windows Defender?

Set it with mrt.exe or You probably need to scan it manually, from start menu, type: mrt
assume you have the file on desktop then see screen shot else select the folder where you have the downloaded file stored.

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Normally, Windows Defender reports to have scanned approx. 550,000 objects when completing a full system scan. Then suddenly, I see full system scans being completed of over 1,200,000 objects or just more than double. What could account for such a large increase in scan size on my system practically overnight?

Answer:Windows Defender Scheduled Scan

Defender defaults to quick scan- full scanning is the entire computer. settings can be changed in tools>options

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When I'm using Windows Defenda on the Quick Scan Time it takes about 10 mins, when I select the full scan it takes over 2 and a half hours too scan my whole pc why is this ?

Answer:Windows Defender Scan Times

The full scan scans all files on your PC whereas the quick scan only scans certain areas such as the registry

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I have Win7 with MSE installed and my daughter has just got a new laptop with Win8 and Windows Defender installed.
 
The two protection systems look very similar except for the fact that there is no option of a scheduled scan on Windows Defender (at least I can't see one). The scheduled scan checks for updates and then scans the system daily or weekly which seems like a sensible idea to me.
 
It looks as though the only way to do a scan on Win8 is to do it manually - not a good idea, I would have thought, as it's easy to forget.
 
Am I missing something here? Is there a way to schedule scans?

Answer:Will Windows Defender Do A Scheduled Scan?

Hi, from here
http://answers.microsoft.com/en-us/windows/forum/windows_8-performance/windows-defender-windows-8-schedule-option-missing/b6603c6a-cba9-4ba7-a894-37f895fc6c92
 
As I understand, you are facing issues with scheduling of Windows Defender. 
You may follow the steps to open Task Scheduler:
a.     Press Windows key + W on the keyboard to bring up Search interface.
b.    Type “Schedule tasks” without quotes and select it from the list on the left hand side.
c.     It will open up the Task Scheduler window.

It would pay to read the entire page
 
Good Luck
Roger

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Relevance 59.04%

I run a scan but as soon as I have rebooted and within an hour or so it asks me again? I receive the notification in the taskbar and Windows Defender turns orange and states I am unprotected. So far I have completed 3 clean scans today but after a reboot it is as if it does not remember that I have run a scan. I am running the latest Windows 10 pro.
Any ideas? Thanks in advance.

Answer:Windows Defender keeps asking me to complete a scan?

Try these Tutorials, they may correct your problem.

#1, SFC Command - Run in Windows 10 - Windows 10 Forums

If the problem still persists try this.

Use option 1.

#2, DISM - Repair Windows 10 Image - Windows 10 Forums

Good luck...

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Relevance 58.63%

i have a client running windows 8.1. on a touchscreen laptop. He set a full scan and it was running for 58 hours till he finally shut it off.
He also has malwarebytes and on a full scan it took 2 days to finsih
Quick scans take about a half hour
I am getting his laptop this afternoon to try to figure this out but I wanted some suggestions please

thanks
robin

Answer:What would make Windows defender scan for 58 hours?

Maybe run

Dism /Online /Cleanup-Image /RestoreHealth

&
sfc /scannow

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Limited Periodic Scanning allows Windows Defender to remain running in the background and periodically scan your PC for threats, even if you have another Antivirus installed for real-time protection.

​For what reason did you enable or disable Limited Periodic Scanning?
 

Answer:Have you allowed Windows Defender to scan your PC, periodically?

@Huracan
So you can do that from right there in settings, very good.
Traveling to Gpolicy to edit the settings seemed a bit excessive.
I notice there you can disable the periodic scanning yet leave realtime protection on strange they are not tied together.
Your "realtime" protection toggle is greyed out i noticed too, is that default after the update of did you tweak something ?
Nice post brother.
 

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Hi, so lately i've found that when launching a application windows defender does a full scan of all its files etc, not sure if this is exactly normal but when running apps with multiple files eg photoshop with presets fonts etc, it scans them all which not only makes it longer to actually start the application but the whole computer down, i have one 1TB 7200RPM disk that i am running and 16gb ram,

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I recently had some issues with Skype sending links to all my contacts so I changed my password and performed a scan with Windows Defender (steps that are presented on Skype's FAQ/Tech Support website), but everytime I scan it hangs/freezes and does not complete. I was watching it the whole time it scanned and I could hear the tower's light clicking noise as it looked through my HDD. The sound stopped as soon as the "Items scanned" number froze and has been sitting in this state for at least thirty minutes.

I've done a couple generic things I've found on other forums like running
Code:
sfc /scannow


(which showed corrupted files that were unable to be fixed) and
Code:
dism /online /cleanup-image /restorehealth


which reported back that all files were fixed but Defender is still hanging, and I don't know what is causing it.

I also found a post on sevenforums.com that said removing a few Windows updates that caused Defender to hang would fix an issue that is very similar to what I'm experiencing. These updates are listed here:
Code:
KB2876229 SKYPE
KB2923545
KB2970228
KB2977728
KB2978092
KB2994023
KB3022345
KB3035583
KB2990214
KB3021917
KB2952664


On a possibly related matter, my computer will randomly freeze up and require me to soft reset by use of the reset button on the front of the case.

Booting also sometimes hangs at the loading screen (Screen shows ASUS logo and a number of small dots that appear and loop to form a circle then d... Read more

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can do it on another laptop without any problems. I have now had to start doing a Custom Scan as the full scan is just so slow that there must an issue with the full scan. Can I fix it or do I just have to carry on doing a Custom Scan only?

Answer:Can't do a Windows Defender full scan on one laptop but

Depending on the files it is scanning or if another process is running at the same time it may take a while. Let it do its thing.

17 more replies
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I'm presently using (running) Avast Pro and Malwarebytes Anti-Exploit-Free, with weekly running of CCleaner, Malwarebytes Anti-Malware, and AdwCleaner. I do a lot of browsing and haven't had any problems with this approach. However, I got the hankering to also keep Windows Defender up-to-date and to occasionally run its scan just to see see if anything comes up. So, I go to WD with the expectation that it is turned off and find that it may not be. I would go to update&security>windows defender and find, to my surprise, that real-time protection and cloud based protection are turned on, but grayed out. Furthermore, when scrolling to the bottom of the screen and clicking Open Windows Defender, I get the message that "WD is turned off and not monitoring the computer." I then went to Brink's WD tutorial (Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums), but I am confused as to how to proceed as I don't know which option to use, or even if this is the right approach???

Answer:Confusion about turning on Windows Defender to do a scan

...........but I am confused as to how to proceed as I don't know which option to use, or even if this is the right approach??? .............

If you have Windows 10 Pro, use Option One.
For Windows 10 Home, use Option Two.

3 more replies
Relevance 58.63%

Hi!
So I got a message from Windows Defender yesterday, saying that there are possible threats on my PC. I did a complete scan and the threats were removed afterwards. Now, I let my brother know about this, since I was wondering about how some of these threats got on here (I had a Trojan, a Trojandownloader and a Hackertool). He said he didn't know, but that he was not surprised (my stephbrother messes around a lot on this thing ). He then asked to send him a screenshot of the scan results, but I can't find them anywhere! How can I bring those back? Where can I find them please?
Thank you for helping me out!

Answer:How to see the results of latest Windows Defender scan

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To do a complete full system virus scan (not Quick Scan) takes many minutes. I have mine on a schedule in Windows Defender. When I look at the History log it indicates the time to complete the task is about one minute. Can someone explain the log?s entry? Why is the time to complete so short?
A screenshot link of the History log is below.

Jerry

Answer:Windows Defender-Scheduled Scan Time

MpCmdRun.exe runs scans and updates. Maybe it was checking for definitions update at that time.

4 more replies
Relevance 58.63%

I am unable to run a full scan on Windows Defender - the scan runs extremely slowly (only a dozen files per minute) and often hangs. The issue isn't that I have too many files - I've used only half of my available space and full scan worked perfectly well before I upgraded to Windows 10. Quick scan functions normally. How can I solve this issue?

Answer:Unable to run full scan on Windows Defender

ran into the same problem

d/l one of the free programs

to make sure everything is ok

i stopped using W/D

4 more replies
Relevance 58.63%

Hi, so lately i've found that when launching a application windows defender does a full scan of all its files etc, not sure if this is exactly normal but when running apps with multiple files eg photoshop with presets fonts etc, it scans them all which not only makes it longer to actually start the application but the whole computer down, i have one 1TB 7200RPM disk that i am running and 16gb ram,

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Windows defender used to speed by, now it is slow as a snail. It got stuck 2x at a file. I had to cancel the scan and start all over.
Now it is going but slow as can be, it has been scanning for 20 min and only half thru.
anyone seeing this?

Answer:Windows Defender takes forever to scan

Hey Robin,

It really depends on the file it's scanning, and how many. If this is a .iso or .vhd then it could take a while to scan them.

4 more replies
Relevance 58.63%

Hi, so lately i've found that when launching a application windows defender does a full scan of all its files etc, not sure if this is exactly normal but when running apps with multiple files eg photoshop with presets fonts etc, it scans them all which not only makes it longer to actually start the application but the whole computer down, i have one 1TB 7200RPM disk that i am running and 16gb ram,

More replies
Relevance 58.63%

On opening the Task Scheduler I get a message " Task MP scheduled Scan. Task image is corrupt or has been tampered with ". I look in Library, Microsoft, Windows Defender and the Task MP Scheduler is not there. Real time protection appears to be working and I can do a manual scan through the control panel. Can I download a replacement Windows Defender file or can I fix what I have now without using Refresh or Recovery.

As an afterthought, is it possible to recreate the task in the library and please provide a snapshot of what it may look like

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Relevance 58.63%

I'm presently using (running) Avast Pro and Malwarebytes Anti-Exploit-Free, with weekly running of CCleaner, Malwarebytes Anti-Malware, and AdwCleaner. I do a lot of browsing and haven't had any problems with this approach. However, I got the hankering to also keep Windows Defender up-to-date and to occasionally run its scan just to see see if anything comes up. So, I go to WD with the expectation that it is turned off and find that it may not be. I would go to update&security>windows defender and find, to my surprise, that real-time protection and cloud based protection are turned on, but grayed out. Furthermore, when scrolling to the bottom of the screen and clicking Open Windows Defender, I get the message that "WD is turned off and not monitoring the computer." I then went to Brink's WD tutorial (Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums), but I am confused as to how to proceed as I don't know which option to use, or even if this is the right approach???

Answer:Confusion about turning on Windows Defender to do a scan

...........but I am confused as to how to proceed as I don't know which option to use, or even if this is the right approach??? .............

If you have Windows 10 Pro, use Option One.
For Windows 10 Home, use Option Two.

0 more replies
Relevance 58.22%

Everytime I restart my machine I find that defender is off. I can turn it on fine, and it stays on for the remainder of the session.

Service is set to "Automatic (delayed start)". AVG resident shield is OFF (maybe AVG would turn it off since it has its own spyware). I already tried the steps in MS kb555962.

Any suggestions?!

Answer:Defender Refuses to Stay On

AVG disables Defender, even if resident shield is off, it still has its own Anti spyware bits running

easy way to test this is to uninstall AVG see if Defender comes on, (does Windows warn you Defender is off? if it doesnt, AVG is doing defenders job)

9 more replies
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Hi all,

I Always used 3rd part AV and firewall and even well configured with many rules.

But with a clean install of Win10 AU I am using the tools that MS give us.

About the firewall, especially, do you think I risk too much?

Everything that ENTER is blocked but everything that QUIT is leave without any permission.

I don't want also to use weird software of "control" of the firewall.

I am thinking that all this tools makes problems and issues and if I can stay with MS tools I have only to earn about stability, performance and future W10 upgrades.

What do you think?

Answer:Using Windows Defender and Windows Firewall for Win10

I used to use third party software, but have now switched to Windows Defender and Firewall and I find it a lot better than third party.
At least with windows own, I found that all upgrades downloaded and installed with no problem

2 more replies
Relevance 58.22%

Hi all,

I Always used 3rd part AV and firewall and even well configured with many rules.

But with a clean install of Win10 AU I am using the tools that MS give us.

About the firewall, especially, do you think I risk too much?

Everything that ENTER is blocked but everything that QUIT is leave without any permission.

I don't want also to use weird software of "control" of the firewall.

I am thinking that all this tools makes problems and issues and if I can stay with MS tools I have only to earn about stability, performance and future W10 upgrades.

What do you think?

Answer:Using Windows Defender and Windows Firewall for Win10

I used to use third party software, but have now switched to Windows Defender and Firewall and I find it a lot better than third party.
At least with windows own, I found that all upgrades downloaded and installed with no problem

9 more replies
Relevance 57.81%

Does anybody know how to stop this damn notification from popping up every five minutes? I've tried everything. I've let it scan my computer (both quick-scan and full-scan), but within five minutes the notification pops back up again. I've looked online and found that it can be down to a certain setting in CCleaner, I use CCleaner but the option that all the solutions say to untick isn't present in the latest versions.

I'm running Windows 10 64bit.

Answer:Windows Defender needs to scan your computer - non-stop notification.

Why was this moved? It has absolutely nothing to do with AV, Firewalls or System security at all? It has to do with how the Windows 10 notifications work.

Move it back please.

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OTL Extras logfile created on: 4/10/2016 11:20:06 AM - Run 1OTL by OldTimer - Version 3.2.69.0     Folder = C:\Users\jessi\Downloads64bit- An unknown product  (Version = 6.2.9200) - Type = NTWorkstationInternet Explorer (Version = 9.11.10586.0)Locale: 00000409 | Country: United States | Language: ENU | Date Format: M/d/yyyy 15.90 Gb Total Physical Memory | 13.93 Gb Available Physical Memory | 87.61% Memory free18.78 Gb Paging File | 17.18 Gb Available in Paging File | 91.51% Paging File freePaging file location(s): ?:\pagefile.sys [binary data] %SystemDrive% = C: | %SystemRoot% = C:\WINDOWS | %ProgramFiles% = C:\Program Files (x86)Drive C: | 118.69 Gb Total Space | 78.78 Gb Free Space | 66.37% Space Free | Partition Type: NTFSDrive D: | 465.76 Gb Total Space | 448.45 Gb Free Space | 96.28% Space Free | Partition Type: NTFSDrive E: | 1397.25 Gb Total Space | 1395.51 Gb Free Space | 99.88% Space Free | Partition Type: NTFS Computer Name: DESKTOP-GPDDCON | User Name: jessi | Logged in as Administrator.Boot Mode: Normal | Scan Mode: Current user | Include 64bit ScansCompany Name Whitelist: Off | Skip Microsoft Files: Off | No Company Name Whitelist: On | File Age = 30 Days ========== Extra Registry (SafeList) ==========  ========== File Associations ========== 64bit: [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\<extension>].html[@ = htmlfile] -- C:\Program Files\Internet Explorer\iexplore.exe (Microsoft Corporation).url[@ ... Read more

Answer:windows defender shuts down before full scan finishes.

Greetings disneyjunkie and to BleepingComputer's Virus/Trojan/Spyware/Malware Removal forum.My name is Oh My! and I am here to help you! Now that we are "friends" please call me Gary.If you would allow me to call you by your first name I would prefer to do that.===================================================Ground Rules:First, I would like to inform you that most of us here at Bleeping Computer offer our expert assistance out of the goodness of our hearts. Please try to match our commitment to you with your patience toward us. If this was easy we would never have met.Please do not run any tools or take any steps other than those I will provide for you while we work on your computer together. I need to be certain about the state of your computer in order to provide appropriate and effective steps for you to take. Most often "well intentioned" (and usually panic driven!) independent efforts can make things much worse for both of us. If at any point you would prefer to take your own steps please let me know, I will not be offended. I would be happy to focus on the many others who are waiting in line for assistance.Please perform all steps in the order they are listed in each set of instructions. Some steps may be a bit complicated. If things are not clear, be sure to stop and let me know. We need to work on this together with confidence.Please copy and paste all logs into your post unless directed otherwise. Please do not re-run any programs I suggest. If you encounter pro... Read more

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Windows 8.x finally bundled an antivirus utility that used to be called Microsoft Security Essentials and rebranded it as Windows Defender. The only problem is that you can?t easily setup automatic scheduled scans anymore.

We?re guessing that they removed some of these features to make all of the other antivirus utilities happy, or maybe because theoretically real-time protection is all you need. Either way, you?re probably reading this article because you want to setup a scheduled scan to run automatically.

Automatically Scan with Windows Defender on a Schedule
To accomplish this task we?ll use the Schedule tasks search result? which is actually the Task Scheduler. Why Microsoft couldn?t have just called it that in the list we?ll never know.

Either way, open the Start Screen and search for ?schedule? and it?ll come up right away in the list.

Once you are there, browse down to Microsoft -> Windows -> Windows Defender in the left-hand pane, and then you?ll find the item ?Windows Defender Scheduled Scan? in the right-hand side. Double-click on it.

Now flip over to the Trigger tab, click to create a new trigger, and then use the On a schedule panel to setup the time and date you want it to run. You can do a scan every day, or weekly, or even just once.

Source
 

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Hello!
after the upgrade of windows 10, I tried to run a full scan, but it took 6 hours and it hasn't trepasses the 50% of the scan progress. in addition, I can't see what is being scanned like in the older version of Windows Defender;

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Hi!

I know only one AV program which can scan files from command line - Avast - but not free version.
So, Q is simple, maybe answer too:
Is possible to scan files for viruses by Windows Defender from command line?

Thank you for help.
Miro
 

Answer:Is possible to scan files by Windows Defender from command line?

Yes see of these links can help found by preforming a simple google search.

https://technet.microsoft.com/en-us/library/gg131918.aspx
https://docs.microsoft.com/en-us/wi...and-line-arguments-windows-defender-antivirus
https://www.windowscentral.com/how-use-windows-defender-command-prompt-windows-10
https://superuser.com/questions/481862/how-can-you-scan-from-the-command-line-with-windows-defender
 

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I,m running Win7 64 bit with 4 gb ram
Windows Defender Freezes and Or Shuts down while doing a Full Scan.

I have Kaspersky Anti Virus 2015 and the same thing happens with that. I also have Malwarebytes Professional
and have run the two of them together for a couple of years with no problem and from time to time I would use Windows Defender. Now I have the Freezing/Shut-down problem.

However when I do a Full C:\ Scan with Malwarebytes it does a complete run. I have spoken with an MS Technician and he believes it may be an MS update fault Thats why Windows Defender and Kaspersky Fail on a Full Scan and Custom Scans but OK on Quick Scans.

For the last 3 weeks I have been corresponding with the Kaspersky Lab people and after several tests they had me do They have come to the conclusion the Log files point to a Microsoft problem and suggested I contact MS So here I am in the Forum I hope someone can point me in the right direction .

Answer:Windows Defender Freezes and Or Shuts down while doing a Full Scan

@TonyMen

Do you have Microsoft Security Essential installed? If so, uninstall that because you have Kaspersky Anti Virus 2015 installed. You can then run window defender. It may ask you to update, go ahead. Then you can run that.

If you still can't run windows defender, you can do it from boot disk. This will automatic run a quick scan once you boot to the disk. I think you can cancel it and run a full scan if you want.

What is Windows Defender Offline? - Windows Help

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"The group resource is not in the correct state to perform the requested operation."
 
Is there any way to fix this problem?  I thought about going to an old restore point but the last time I did that, I had to re-install programs. And, I'm not even sure that would fix this problem.  Anyone have any idea how to fix this?  Am I posting in the right place for this problem?  I'm not having any problems running any other scanners.  A wee bit of Google searching didn't much answer my question here. 
 
Thanks,
Willy

Answer:Unable to run Windows Defender Scan - Error #0x8007139f

If your PC still has another antivirus installed or if one was installed previously then you should use appropriate removal tool to remove all third party antivirus and anti spy ware programs. 

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plugged in USB thumb drive opened windows explorer right clicked drive scan with windows defender and it said scanning pc but it never shows any options so I dont know if it scanned pc or usb for sure why or not

Answer:windows defender automatically scan thumb drives

It scans where the right-click is focused - in this case, the USB drive

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How to update a Windows Defender Offline Scan USB Tool before using it on an offline computer
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Good morning All,
Yesterday I created a Windows Defender Offline Scan USB Tool to scan an old XP Notebook that is offline and due to its out of date OS will remain offline. Files will be moved to and from my desktop via a USB Drive and I want to make sure the XP machine is totally clean before putting it into operation.

When I ran the tool and saw it needed updating, which I can't do offline, I came here for advice. Arc gave me Brinks detailed instructions on making and updating the USB Tool.

"Note: If you run the Windows Defender Offline Tool again on the same USB flash drive, and if the following conditions below are met, the tool will only download new updated malware definitions (approx. 69.48 MB) and update the USB drive without reformatting it. [... & 3 Conditions]"

This morning I verified the used space on the USB drive before and after I ran the file <mssstool32.exe> a 2nd time on the same USB Drive and found the used space increased +/- 1 MB. However, running it again on the XP machine I received the same "Virus and Spyware Definitions: Out of Date" message (attached).
[To be sure running the creation tool twice consecutively was not the issue I ran it again 2 more times with no additional changes to the used space.] And another try on the XP machine gave me the same "Needs Update" message.

Now I am wondering how the XP machine k... Read more

Answer:How to update a Windows Defender Offline Scan USB Tool before using it

You don't need a USB now with Win10, it's built in: Windows Defender Offline Scan in Windows 10 - Windows 10 Forums

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plugged in USB thumb drive opened windows explorer right clicked drive scan with windows defender and it said scanning pc but it never shows any options so I dont know if it scanned pc or usb for sure why or not

Answer:windows defender automatically scan thumb drives

It scans where the right-click is focused - in this case, the USB drive

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While using Windows Defender Offline (WDO) scans show that it detects some sort of virus. The problem is at the end of scan it doesn't allow me to review or remove the virus. I need Help.

Answer:Windows defender offline scan results problem

Couple of things that can adversely affect how Windows Defender Offline performs.
1. It's absolutely necessary that the bootable media is created on a malware-free computer. Otherwise, the malware could prevent your PC from downloading the program, burning it correctly to the bootable media, or prevent it from operating as intended.
2. Do not re-use a previously created a CD or DVD.

This tutorial gives some more info about creating and using the bootable WDO media.

Windows Defender Offline

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cant do a scan with windows defender i get error message 0x8050800c ive checked with the microsoft suppiort ive installed all updates has anybody else had this problem and know how to fix it?

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How to update a Windows Defender Offline Scan USB Tool before using it on an offline computer
-
Good morning All,
Yesterday I created a Windows Defender Offline Scan USB Tool to scan an old XP Notebook that is offline and due to its out of date OS will remain offline. Files will be moved to and from my desktop via a USB Drive and I want to make sure the XP machine is totally clean before putting it into operation.

When I ran the tool and saw it needed updating, which I can't do offline, I came here for advice. Arc gave me Brinks detailed instructions on making and updating the USB Tool.

"Note: If you run the Windows Defender Offline Tool again on the same USB flash drive, and if the following conditions below are met, the tool will only download new updated malware definitions (approx. 69.48 MB) and update the USB drive without reformatting it. [... & 3 Conditions]"

This morning I verified the used space on the USB drive before and after I ran the file <mssstool32.exe> a 2nd time on the same USB Drive and found the used space increased +/- 1 MB. However, running it again on the XP machine I received the same "Virus and Spyware Definitions: Out of Date" message (attached).
[To be sure running the creation tool twice consecutively was not the issue I ran it again 2 more times with no additional changes to the used space.] And another try on the XP machine gave me the same "Needs Update" message.

Now I am wondering how the XP machine k... Read more

Answer:How to update a Windows Defender Offline Scan USB Tool before using it

You don't need a USB now with Win10, it's built in: Windows Defender Offline Scan in Windows 10 - Windows 10 Forums

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Results of the Windows Defender Offline Full Scan:

Trojan:Win32/Dynamer!dtc Severe Active Remove
Exploit:Java/CVE-2012-1723.AQT Severe Active Remove
Trojan:Win32/Alureon Severe Active Remove

Providing the above per gregrocker in the General Discussion forum entitled, "Hp laptop startup issues.

Answer:Results of Windows Defender Offline Full Scan

Hello sbuxman Mate have you actually removed these if not maybe try a scan with either Malwarebytes or SuperAntiSpyware? you may be able to clear those with those apps.

Malwarebytes : Free anti-malware download

SUPERAntiSpyware | Remove Malware | Remove Spyware - AntiMalware, AntiSpyware, AntiAdware!

download the free versions and update scan and remove if they show up.

if you have got these already - sorry!

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Is it Possible to speed up Windows Defender Full Scan? Avast Scans fast on my 8 Core system, and yet Windows Defender takes 3-4 hours minimum on my 8 Core System, with 2tb hard drive, Longer if external drives are connected

Should I just deal with it til I do my clean install prior to Anniversary update later this summer?

Answer:Speeding Up Windows Defender Scan on Windows 10 Home 64bit

It takes about four hours for Defender to do a deep scan on my three partitions.

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Is it Possible to speed up Windows Defender Full Scan? Avast Scans fast on my 8 Core system, and yet Windows Defender takes 3-4 hours minimum on my 8 Core System, with 2tb hard drive, Longer if external drives are connected

Should I just deal with it til I do my clean install prior to Anniversary update later this summer?

Answer:Speeding Up Windows Defender Scan on Windows 10 Home 64bit

It takes about four hours for Defender to do a deep scan on my three partitions.

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Error message on my Windows Update page:

"Theres a problem getting preview builds
your preview build settings nned attention. go to advanced options to fix this issue"

I go into advanced settings, and see that my MS Account is linked correctly.

"Your security settings need attention to get preview builds."
"fix this issue" button, click this, and it says in order to make this change it needs to restart the PC. I do this, but it doesn't fix the problem

The problem of not being able to get Insider Preview builds persists after a "reset windows 10 and remove everything" reset.

Answer:Win10 refuses to get Insider Preview Builds

If you don't mind reinstalling all the 3rd party programs you have installed, then do a CLEAN install.
Backup your personal files to an external hard drive or an USB flash drive.
Download the current Win 10 ISO from Tech Bench link below > burn it to a bootable DVD or USB > then do a clean install.
http://www.microsoft.com/en-us/softw...load/techbench
If you are asked for a product key, just click the SKIP option and continue.
Activation will be automatic.

Once you have a clean copy of Windows 10 running, then enable the Get Insider Preview Builds option.

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