Windows 10: Windows Defender Manual Update Error

Discus and support Windows Defender Manual Update Error in Windows 10 Updates and Activation to solve the problem; When I attempt to do a manual update of Windows Defender definitions I get an error message. From the Windows Defender Security Center, clicking... Discussion in 'Windows 10 Updates and Activation' started by c2613, Oct 11, 2017.

  1. c2613 Win User

    Windows Defender Manual Update Error


    When I attempt to do a manual update of Windows Defender definitions I get an error message.

    From the Windows Defender Security Center, clicking "Check for Updates" results in the message shown in the following screen shot:


    Windows Defender Manual Update Error [​IMG]


    When I attempt manual update from the Windows Defender Antivirus screen by clicking "Update Definitions" I get the following screenshot


    Windows Defender Manual Update Error [​IMG]


    Interestingly, Windows Defender seems to successfully update itself when left to do so in automatic mode.

    Looking for help finding the source and fix for this issue.

    Many thanks to anyone who can be of help.

    C.

    :)
     
    c2613, Oct 11, 2017
    #1

  2. On Windows Defender Definition Update error 0x80070643

    With all due respect, I don't see anything in Jason Yim's multi-edited post above stating that a onetime manual Defs update (whether via the Update button or the Security Portal) will then lead to Defender "automatically updating itself" again. Do you have
    another source?

    FWIW OPs in many of the recent threads I've handled about the error tell me that Defender
    is auto-updating, they're only encountering the 0x80070643 error when attempting to update Defender whilst running a manual check for (Windows) updates.

    Others state that the 0x80070643 errors are only listed in Update History, despite the fact that Defender recently auto-updated & continue to auto-update.
     
    PA Bear - MS MVP, Oct 11, 2017
    #2
  3. Windows defender not updating every time I try to update

    Definition Update for Windows Defender - KB2267602 (Definition 1.213.6048.0) - Error 0x80070643

    Every time I click 'update' it comes up with this error. It will not let me update it manually or through the defender as it has been disabled. please help?
     
    ρяαиανι, Oct 11, 2017
    #3
  4. Bree New Member

    Windows Defender Manual Update Error

    I'm not seeing that problem. Apparently a 'buggy' definition update has caused this error in the past. If it continues, this post from @jyim89 (Microsoft Windows Defender Team) may be of help...

    On Windows Defender Definition Update error 0x80070643
     
  5. c2613 Win User
    I had previously posted about this problem on the "answers.microsoft.com" forum. Jason Yim was one of the responders to that post. I followed his instructions for obtaining Windows logs and sending to him. Have heard nothing more from him for a couple of weeks.

    Don't think this is related to a single definition update because every day or so, it shows a different definition update available but the same error message is displayed for each manual update attempt.

    C.
     
    c2613, Apr 5, 2018
    #5
Thema:

Windows Defender Manual Update Error

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