Windows Defender update KB4052623 Error 0x80070643


  1. Posts : 14
    Win 10 64bit
       #1

    Windows Defender update KB4052623 Error 0x80070643


    I keep getting this fail error - Update for Windows Defender antimalware platform - KB4052623 (Version 4.12.17007.17123) - Error 0x80070643 Has anyone else run into this or know a solution?
    Last edited by hollidayjr; 09 Dec 2017 at 14:17.
      My Computer


  2. Posts : 80
    Windows 10
       #2

    Run the WU Troubleshooter
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  3. Posts : 14
    Win 10 64bit
    Thread Starter
       #3

    Tried that, not fixed
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  4. Posts : 25,034
    10 Home x64 (21H2) (10 Pro on 2nd pc)
       #4

    Welcome to TenForums @hollidayjr

    First, try restarting the PC. Then try opening Defender and manually checking for protection updates. This doesn't just check for definitions updates, it will also check for and install antimalware platform updates.
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  5. Posts : 14
    Win 10 64bit
    Thread Starter
       #5

    That fails also, thanks.
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  6. Posts : 14
    Win 10 64bit
    Thread Starter
       #6

    QUESTION?? Is there a way to manually update the defender antimalware platform without using WU or opening Defender and manually checking, such as a stand alone file or update from microsoft? I searched and could not find anything.
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  7. Posts : 4,224
    Windows 10
       #7

    The Windows Update MiniTool, aka WUMT, will do updates outside the usual channels. I've used it to bring Defender up to date when other methods have failed, and WU repairs have likewise been unsuccessful. You can grab it from MajorGeeks at Download Windows Update MiniTool - MajorGeeks
    HTH,
    --Ed--
      My Computers


  8. Posts : 14
    Win 10 64bit
    Thread Starter
       #8

    Thanks Ed for the help, tried the mini update, still no help with installing the platform update. I had to do an in-place update again back to 16299.15 and then update from there and all worked normally.
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  9. Posts : 4,224
    Windows 10
       #9

    Glad you got it sorted. WUMT is a handy tool, though, so you may want to keep it in your toolbox.
    Best wishes,
    --Ed--
      My Computers


 

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