Update Fails Windows and Defender

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  1. Posts : 56
    Win 10
       #1

    Update Fails Windows and Defender


    Since yesterday i keep getting this error.

    Any ideas how to fix this?

    Update Fails Windows and Defender-wup.png
      My Computer


  2. Posts : 33,589
    Win 7 32, Win 7 64 Pro, Win 8.1 64 Pro, Win 10 64 Education Edition
       #2

    See this post for info on the problem.

    Error Codet install - Microsoft Community

    In the past I had Defender not update a couple times. I solved it by d/l ing the definitions manually & installing them. In both instances after doing this, my updates started working again.

    You may also wish to run a SFC to see if anything need repaired.

    https://support.microsoft.com/en-us/kb/923159

    https://www.tenforums.com/tutorials/2...dows-10-a.html

      My Computer


  3. Posts : 52
    10
       #3

    FIX: I was able to fix this by opening CMD as Admin and typing (with quotes):


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -RemoveDefinitions -All


    Then I typed (with quotes:


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -SignatureUpdate


    Hope this helped!
      My Computer


  4. Posts : 1
    Windows 10 Pro 1607
       #4

    Bingo!


    colsearle said:
    FIX: I was able to fix this by opening CMD as Admin and typing (with quotes):


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -RemoveDefinitions -All


    Then I typed (with quotes:


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -SignatureUpdate


    Hope this helped!
    This worked like a charm. Thank you.
      My Computer


  5. Posts : 52
    10
       #5

    I've been chasing that one all day !
      My Computer


  6. Posts : 2
    Windows 8.1 Enterprise x64 EN
       #6

    colsearle said:
    FIX: I was able to fix this by opening CMD as Admin and typing (with quotes):


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -RemoveDefinitions -All


    Then I typed (with quotes:


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -SignatureUpdate


    Hope this helped!
    Yes. This actually works, thanks a lot.
      My Computer


  7. Posts : 434
    Windows 10 Pro 64bit
       #7

    Doesn't work!
      My Computer


  8. Posts : 23
    Win 10 Pro x64
       #8

    colsearle said:
    FIX: I was able to fix this by opening CMD as Admin and typing (with quotes):


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -RemoveDefinitions -All


    Then I typed (with quotes:


    "%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe" -SignatureUpdate


    Hope this helped!
    Helped me out
    The update still showed in Windows Update but hitting retry cleared it.
      My Computer


  9. Posts : 52
    10
       #9

    I have posted the fix on many Microsoft forums but all have been deleted. Why would they delete the fix ?

    Worrying
      My Computer


  10. Posts : 9
    Windows
       #10

    I had this problem on a Win 10 Home based computer. Cannot disable Defender.

    Deleted all files in C:\Windows\SoftwareDistribution\Download, and retried update, but the problem were still there. Clicked on Try Again, and Voila!
      My Computer


 

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