Windows 10: Windows Defender refusing to run properly


  1. swarfega

    Pro User
    Posts : 3,494
    Windows 10 Pro 64-bit
       New 04 Apr 2017 #1

    Windows Defender refusing to run properly


    I clean installed Creators Update last Sunday and Defender was running fine until today.

    It refuses to turn on when I press the Turn on Windows Defender Antivirus button in settings.

    Click image for larger version.  Name: wdsettings.PNG  Views: 3  Size: 43.2 KB  ID: 128283

    After I've pressed the button, it takes me to this screen:

    Click image for larger version.  Name: wdscreen1.PNG  Views: 3  Size: 30.6 KB  ID: 128284

    where you can see that the protection section isn't right. Health report says it's not available and there's no update button.

    Today I decided to switch to Insider Release Preview ring and I got the two 11 and 13 cumulative updates. I'm guessing that .14 CU is for fast ring.

    I am not sure how to fix this and if I can't I'll be switching to Bitdefender Free. Because I do work on this machine I want reliable security.
      My ComputersSystem Spec
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  3. Plankton

    Power User
    Posts : 931
    Windows 10 Pro
       New 04 Apr 2017 #2

    There's a known issue in 1607 for a definition update....but for the latest insider preview builds, there's been no reports post on this particular issue. Every one is reporting clean updates. I wonder if it's made the cross over and manifested itself into what you got.
      My ComputerSystem Spec
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  4. swarfega

    Pro User
    Posts : 3,494
    Windows 10 Pro 64-bit
    Thread Starter
       New 04 Apr 2017 #3

    It's possible. But this is a clean creator's update install.
      My ComputersSystem Spec
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