Windows 10: Windows Defender inexplicitly turns itself off

Discus and support Windows Defender inexplicitly turns itself off in AntiVirus, Firewalls and System Security to solve the problem; 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... Discussion in 'AntiVirus, Firewalls and System Security' started by fatz2fly, Jan 21, 2016.

  1. FATZ2FLY
    fatz2fly Win User

    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?

    :)
     
    fatz2fly, Jan 21, 2016
    #1
  2. STEVENREGO
    stevenrego Win User

    windows defender wont turn off.

    mcafee's is compatibale, it's windows defender that's turning itself on after every reboot, is there any way to turn defender off beside's settings?
     
    stevenrego, Jan 21, 2016
    #2
  3. SAN2222
    san2222 Win User
    Two anti-virus soluions running at the same time

    Since now Windows Defender's real time protection is turned off, my question is...What's the difference between Windows Defender and Windows Defender Security Center?

    I did not disable Windows Defender. As per the screenshot, it's likely to be turned off by AVAST or maybe by Windows itself because of WDSC.
     
    san2222, Jan 21, 2016
    #3
  4. DAVIDHK
    davidhk Win User

    Windows Defender inexplicitly turns itself off

    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
     
    davidhk, Jan 21, 2016
    #4
  5. FATZ2FLY
    fatz2fly Win User
    Thanks for responding. I do not use, or have installed, any other AV programs. Windows Defender is my only AV program.
     
    fatz2fly, Jan 21, 2016
    #5
  6. DAVIDHK
    davidhk Win User
    I am afraid I cannot help you any further.
    Sorry.
    Please wait a bit for some one to come along.
    Thank you.
     
    davidhk, Jan 21, 2016
    #6
  7. BORG 386
    Borg 386 Win User
    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
     
    Borg 386, Apr 5, 2018
    #7
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Windows Defender inexplicitly turns itself off

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