1.    22 Jan 2016 #1
    Join Date : Aug 2015
    Posts : 11
    Windows 10

    Windows Defender inexplicitly turns itself off


    Windows Defemder will intermittently fail to start after my HP laptop awakes from sleep mode. This does not occur every time. When it does occur, I get a message that Windows Defender is turned off and I need to turn it on again. When I attempt to turn it on, it eventually times out. I must then reboot the laptop. After rebooting, Windows Defender does not automatically turn on. However, I am able to turn it on manually. What's up?
      My ComputerSystem Spec
  2.    22 Jan 2016 #2
    Join Date : Nov 2015
    Posts : 4,799
    windows 10 Home threshold2

    The following 3rd party AVs are known to turn off Windows Defender. It is because they have their own defenders. To have 2 defenders running in the same machine will create conflicts, not to mention redundancy.

    Do you have one of the below installed ?
    Avast
    AVG
    Norton
    McAfee
      My ComputerSystem Spec
  3.    22 Jan 2016 #3
    Join Date : Aug 2015
    Posts : 11
    Windows 10
    Thread Starter

    Thanks for responding. I do not use, or have installed, any other AV programs. Windows Defender is my only AV program.
      My ComputerSystem Spec
  4.    22 Jan 2016 #4
    Join Date : Nov 2015
    Posts : 4,799
    windows 10 Home threshold2

    Quote Originally Posted by fatz2fly View Post
    Thanks for responding. I do not use, or have installed, any other AV programs. Windows Defender is my only AV program.
    I am afraid I cannot help you any further.
    Sorry.
    Please wait a bit for some one to come along.
    Thank you.
      My ComputerSystem Spec
  5.    23 Jan 2016 #5
    Join Date : Oct 2014
    In a house with a crazy cat trying to kill me
    Posts : 16,132
    Win 7 32, Win 7 64 Pro, Win 8.1 64 Pro, Win 10 64 Education Edition

    It wouldn't hurt to run a SFC to see if there's something that might need fixing. Option 3 is the recommended one to use.

    SFC Command - Run in Windows 10 - Windows 10 Forums

    Another option you can use to see if any files need fixed:

    DISM - Repair Windows 10 Image - Windows 10 Forums

    Something else you may want to try. Turn off Defender, reboot, restart Defender & then reboot again. Sometimes turning a program off/back on again fixes the problem.

    Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums
      My ComputerSystem Spec

 


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