Win Defender KB4052623 (v4.18.1905.4) repeated install fail 0x80070643


  1. suirauqa
    Posts : 1
    Windows 10
       New #1

    Win Defender KB4052623 (v4.18.1905.4) repeated install fail 0x80070643


    Can someone please tell me more about this situation? This Windows Defender update is repeatedly failing to install: KB4052623 (Version 4.18.1905.4) installation fail with Error 0x80070643. I have searched various forums for a solution, but have found none so far that pertains to this specific version.

    Also, when I try to manually update Windows Defender from within Windows Defender, I get another error message saying: error code -2147023293 protection definition update failed.

    Thanks in advance for any help provided. I should add that I have no 3rd party AV installed.

    Here are the respective screenshots of the error messages:
    Win Defender KB4052623 (v4.18.1905.4) repeated install fail 0x80070643-windowsdefenderupdateerror.png
      My Computer
    Quote Quote

  3. FreeBooter
    Posts : 5,379
    Windows 11 Pro 64-bit
       New #2

    This Script allow reset the Windows Update Agent resolving issues with Windows Update.

    https://gallery.technet.microsoft.co...Agent-d824badc
      My Computer
    Quote Quote

 

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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?
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