Windows 10: Why does Defender need to run a scan several times a day? Solved


  1. Posts : 73
    Windows 10 Pro
       10 Jun 2016 #1

    Why does Defender need to run a scan several times a day?


    It is SCHEDULED to run at 3:00 am. It does. Then any time I reboot, or at just random times a day, the annoying message pops up that I Defender needs to scan.......... until I DO let it scan, it causes problems.

    How cool, 6-10 Defender scans a day.........

    EDIT: And now in hopes I can bang some tanks at WOT I'm going to waste however long it takes to let Defender scan........ what's that, 30 minutes, an hour, so when I start it won't crash the computer hogging all the resources or DNS'ing to let me know it needs to scan.

    6-10 times a day.........

    EDIT: Whoops, it *only* take 15 min to scan. Never sat around and timed it before. I know, I really should have nothing to do but time Window operations but........ anyway, the main issue remains.
      My ComputerSystem Spec


  2. Posts : 2,554
    Windows 10 x64 Home Build (Redstone(1)) 15063.608
       10 Jun 2016 #2

    Yes it also updates several times a day as well I like it
    As I had McAfee on mine before and it used to update and scan once a week and used to take anything up to 8-10 hours to do so.
    Also since taking McAfee off computer loads faster still as Defender does not hog the download,

    I would not worry too much it just shows they are on the ball to keep your laptop/computer virus free
      My ComputerSystem Spec


  3. Posts : 4,771
    windows 10 Home threshold2
       10 Jun 2016 #3

    DeathStalker said: View Post
    It is SCHEDULED to run at 3:00 am. It does. Then any time I reboot, or at just random times a day, the annoying message pops up that I Defender needs to scan.......... until I DO let it scan, it causes problems.

    How cool, 6-10 Defender scans a day.........

    EDIT: And now in hopes I can bang some tanks at WOT I'm going to waste however long it takes to let Defender scan........ what's that, 30 minutes, an hour, so when I start it won't crash the computer hogging all the resources or DNS'ing to let me know it needs to scan.

    6-10 times a day.........

    EDIT: Whoops, it *only* take 15 min to scan. Never sat around and timed it before. I know, I really should have nothing to do but time Window operations but........ anyway, the main issue remains.
    I did have this annoyance before but not 6 - 10 times a day.
    I just let it scan, minimized it, and went about doing what I was doing.

    For no apparent reason, I do not have this issue anymore.

    Sorry, what I said does not help you solving the problem. I know that.
    Just to let you know you are not alone in this strange issue.
      My ComputerSystem Spec


  4. Posts : 16,505
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       10 Jun 2016 #4

    Do you have Defender checked in either

    Disk Cleanup?
    Click image for larger version. 

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    or Ccleaner?
    Click image for larger version. 

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    Or any other cleaning tool?, This deletes the scan logs in Defender, so it thinks it hasn't scanned yet.
    So make sure you keep them unchecked.

    Also if you would like a custom view(works like a shortcut inside event viewer) for Defenders logs in Event Viewer, go to this post and download the zip file and follow the instructions to import it: Windows Defender Offline Scan in Windows 10 - Windows 10 Forums
      My ComputersSystem Spec


  5. Posts : 73
    Windows 10 Pro
    Thread Starter
       11 Jun 2016 #5

    hTconeM9user said: View Post
    Yes it also updates several times a day as well I like it
    As I had McAfee on mine before and it used to update and scan once a week and used to take anything up to 8-10 hours to do so.
    Also since taking McAfee off computer loads faster still as Defender does not hog the download,

    I would not worry too much it just shows they are on the ball to keep your laptop/computer virus free
    Sorry, I don't follow the logic, but thanks for the reply.
      My ComputerSystem Spec


  6. Posts : 73
    Windows 10 Pro
    Thread Starter
       11 Jun 2016 #6

    @Cliff: That is EXACTLY the problem. I don't even have to check. I installed CrapCleaner to get rid of the remnants of World of tanks to do an re-install and left it open to *clean* at will lol. I'll check to see if I havre that checked.

    Kinda funny about the Disc Cleanup though, while it's probably been doing that forever, I have my disc clean up scheduled to run right before the Defenders scan that night so I would have never noticed it except for the CCleaner......

    Thanks again.

    Edit: Dude, I just noticed the thing by your name that tells where you are from. Bamberg? I lived there for 2 years. Loved it. I miss the jaeger Sschnitzel from the Wine Cellar (forget the German spelling, that is the English translation).
      My ComputerSystem Spec


  7. Posts : 16,505
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       12 Jun 2016 #7

    DeathStalker said: View Post
    @Cliff: That is EXACTLY the problem. I don't even have to check. I installed CrapCleaner to get rid of the remnants of World of tanks to do an re-install and left it open to *clean* at will lol. I'll check to see if I havre that checked.

    Kinda funny about the Disc Cleanup though, while it's probably been doing that forever, I have my disc clean up scheduled to run right before the Defenders scan that night so I would have never noticed it except for the CCleaner......

    Thanks again.

    Edit: Dude, I just noticed the thing by your name that tells where you are from. Bamberg? I lived there for 2 years. Loved it. I miss the jaeger Sschnitzel from the Wine Cellar (forget the German spelling, that is the English translation).
    I got here in 1989 and was assigned to B-Btry 4/14th FA. Got out in 1992 after Desert Sabre and stayed, been here ever since
      My ComputersSystem Spec


  8. Posts : 73
    Windows 10 Pro
    Thread Starter
       12 Jun 2016 #8

    Cool beans. I left in 89, right after the wall fell. Got to go to East Berlin the summer before. 1/54Inf (I think they changed to 6/6 right before I left, but I was clearing so didn't pay attention), the Mailed Foot Battalion.
      My ComputerSystem Spec


 

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