Windows Update Error 0x80070643 for Windows Defender

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  1. Posts : 149
    Windows 10 Pro x64
       #1

    Windows Update Error 0x80070643 for Windows Defender


    Still having issues updating Windows Defender as of 4/3/17, 12:30pm CDT on 10 Pro winver 14393.969 . Windows Update shows Error 0x80070643 but manual update via Defender GUI installed latest virus/spyware definition 1.239.713.0. Re-running Window Update shows everything is up to date.

    It's been at least 4 days since this glitch first appeared on my machines. Any thoughts on why Microsoft is delaying a fix? Perhaps to include in next Patch Tuesday 4/11?

    Windows Update Error 0x80070643 for Windows Defender-defender-1.jpgWindows Update Error 0x80070643 for Windows Defender-defender-2.jpgWindows Update Error 0x80070643 for Windows Defender-defender-3.jpg
      My Computer


  2. Posts : 2,154
    WINDOWS 10 Pro x64 build 19042.685
       #2

    marsmimar said:
    Still having issues updating Windows Defender as of 4/3/17, 12:30pm CDT on 10 Pro winver 14393.969 . Windows Update shows Error 0x80070643 but manual update via Defender GUI installed latest virus/spyware definition 1.239.713.0. Re-running Window Update shows everything is up to date.

    It's been at least 4 days since this glitch first appeared on my machines. Any thoughts on why Microsoft is delaying a fix? Perhaps to include in next Patch Tuesday 4/11?

    Windows Update Error 0x80070643 for Windows Defender-defender-1.jpgWindows Update Error 0x80070643 for Windows Defender-defender-2.jpgWindows Update Error 0x80070643 for Windows Defender-defender-3.jpg
    According to Dona Sarkar they have "not seen" that problem, I hope that in the time that has elapsed since the publication of that tweet they already have seen the problem.
    Windows Update Error 0x80070643 for Windows Defender-1.jpg
      My Computer


  3. Posts : 22
    Windows 10
       #3

    Hi All,
    Thank you for your patience regarding Windows Defender update error 0x80070643. We are aware of the issue and trying to roll out a mitigation as soon as possible. Meanwhile to get your machine back to a protected state, you can manually download and apply the latest Definition Update by following the instructions outline here: https://www.microsoft.com/security/p...tions/adl.aspx.”
      My Computer


  4. Posts : 500
    windows 10 (x64) Home 20H2 19042.844
       #4

    I also got that error. Now I update from windows defender and then try windows update. Now I don't get error as defender is updated.
      My Computer


  5. Posts : 24,531
    10 Home x64 (21H2) (10 Pro on 2nd pc)
       #5

    jyim89 said:
    Thank you for your patience regarding Windows Defender update error 0x80070643. We are aware of the issue and trying to roll out a mitigation as soon as possible...
    Thank you @jyim89 for this. Funnily enough I have been able to update Defender (through windows update or from Defender itself) with no problem at all - unlike many others, judging by the large number of threads that have popped up over the last day.

    You may like to comment on this particular thread, as it pertains to this problem affecting the Creators Update...
    Cumulative Update KB4016250 for Windows 10 v1703 Build 15063.11
      My Computers


  6. Posts : 149
    Windows 10 Pro x64
    Thread Starter
       #6

    jyim89 said:
    Hi All,
    Thank you for your patience regarding Windows Defender update error 0x80070643. We are aware of the issue and trying to roll out a mitigation as soon as possible.
    Appreciate the response. :)
      My Computer


  7. Posts : 2
    Windows 10 Home 64 Bit
       #7

    marsmimar said:
    Appreciate the response. :)
    Same issue for me. tried the solution offered here, the problem still persists. manual updates through Windows Defender do work.
    Below is the MpCmdRun.txt file generated after manually trying to remove all Definitions and reload.

    MpCmdRun: Command Line: "C:\Program Files\Windows Defender\MPCMDRUN.exe" -RemoveDefinitions -All Start Time: ‎Tue ‎Apr ‎04 ‎2017 12:26:55Start: MpRemoveDefinitions(1)Finish: MpRemoveDefinitions()MpCmdRun: End Time: ‎Tue ‎Apr ‎04 ‎2017 12:26:55--------------------------------------------------------------------------------------------------------------------------------------------------------------------------MpCmdRun: Command Line: "C:\Program Files\Windows Defender\MPCMDRUN.exe" -SignatureUpdate Start Time: ‎Tue ‎Apr ‎04 ‎2017 12:27:38Start: MpSignatureUpdate()Update started Search Started (MU/WU update) (Path: https://fe2.update.microsoft.com/v6/)...Search Completed Download Started...Time Info - ‎Tue ‎Apr ‎04 ‎2017 12:28:08 Download Completed Download Completed Installation Started...Update failed with hr: 0x80070643Installation Completed Update failed with hr: 0x80070643Search Started (HTTP) (Path: http://go.microsoft.com/fwlink/?Link...24)...Download Started...Time Info - ‎Tue ‎Apr ‎04 ‎2017 12:28:35 Download Completed Installation Started...Installation Completed Search Started (HTTP) (Path: http://go.microsoft.com/fwlink/?Link...24)...Download Started...Download Completed Installation Started...Update failed with hr: 0x80004005Installation Completed Update completed with hr: 0x80070643ERROR: Signature Update failed with hr=80070643MpCmdRun: End Time: ‎Tue ‎Apr ‎04 ‎2017 12:28:44
      My Computer


  8. Posts : 2
    Windows 10, 1607
       #8

    Me Too- been-having this error for 3 days.

    Definition Update for Windows Defender - KB2267602 (Definition 1.239.792.0) - Error 0x80070643
      My Computer


  9. Posts : 8
    Windows 10 Pro
       #9

    Me too exactly like marsmimar on about 15 pc some with Windows 10 Pro and some with Windows 10 Home.

    The only one without this issue is mine ... Windows 10 Pro.
      My Computer


  10. Posts : 1
    windows 10
       #10

    I uninstaled internt explorer and installe 3.5 uninstalled 4.5


    Bree said:
    Thank you @jyim89 for this. Funnily enough I have been able to update Defender (through windows update or from Defender itself) with no problem at all - unlike many others, judging by the large number of threads that have popped up over the last day.
    Windows Update Error 0x80070643 for Windows Defender-capture.jpg

    Set like this then, solved??
    Update works now
    You may like to comment on this particular thread, as it pertains to this problem affecting the Creators Update...
    Cumulative Update KB4016250 for Windows 10 v1703 Build 15063.11

    Set like this then, solved??
    Update works now
      My Computer


 

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