Windows 8 and 8.1 Forums


Can't install Defender Update

  1. #1


    Mt. Crumpit cave
    Posts : 108
    Win 7 Ult X64 SP1

    Can't install Defender Update


    I have this: Definition Update for Windows Defender - KB915597 as an imprtant update but has failed to install 7 times on build 7989. Does anyone else have this issue or know how to fix it?

      My System SpecsSystem Spec

  2. #2


    Posts : 106
    Windows 7 Ultimate, Windows 8 Pro WMC, OS X Mavericks


    Same thing here for a week now. I've just stopped paying attention to it!
    After all, MSE also has antispyware built in.
      My System SpecsSystem Spec

  3. #3


    Same here too
      My System SpecsSystem Spec


  4. #4


    Posts : 62
    Windows 8.1 Pro x64


    Quote Originally Posted by Britton30 View Post
    I have this: Definition Update for Windows Defender - KB915597 as an imprtant update but has failed to install 7 times on build 7989. Does anyone else have this issue or know how to fix it?
    Quote Originally Posted by kizo2703 View Post
    Same thing here for a week now. I've just stopped paying attention to it!
    After all, MSE also has antispyware built in.
    You can manually update it:
    Get the latest definitions - Microsoft Malware Protection Center

    how to:
    How to manually download the latest definition updates for Windows Defender

    If you have MSE installed and running Defender is usually turned-off by default.
      My System SpecsSystem Spec

  5. #5


    Mt. Crumpit cave
    Posts : 108
    Win 7 Ult X64 SP1


    Thanks, I'll give it a try.
      My System SpecsSystem Spec

  6. #6


    Mt. Crumpit cave
    Posts : 108
    Win 7 Ult X64 SP1


    Odd, updated on its own today.
      My System SpecsSystem Spec

  7. #7


    Tropical Island Pair a Dice
    Posts : 3,030
    Windows 8.1 Pro x64/ Windows 7 Ult x64


    That's good news, unexpected but good.
      My System SpecsSystem Spec

  8. #8


    Still not updating here (but I really dont care)
      My System SpecsSystem Spec

Can't install Defender Update

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