Though we don’t normally report on Windows updates, we’ll make an exception on this one. AMD sends word this evening that they are advising users to remove update KB3004394, which was released as part of this week’s Patch Tuesday, due to driver installation issues this update is inflicting.

The update, designed to update Windows’ root certificate store, has apparently been causing havoc on some Windows 7 configurations. In AMD’s case what they are finding is that the update prevents the installation of new graphics drivers on affected systems, with both AMD and NVIDIA drivers refusing to install. More broadly, Infoword is reporting that KB3004394 is also being blamed as the culprit behind certain issues affecting Windows Defender, Task Manager, and other software.

At this point this looks like the update only affects a small number of systems – Windows 8 is not affected, and even then most Windows 7 systems appear to be fine – but Microsoft has not taken any chances and has pulled the update. In the meantime for those users that are affected, uninstalling the faulty update reportedly fixes the issue.

Source: Microsoft



View All Comments

  • Matias - Friday, December 12, 2014 - link

    Don't know if it is related by I had a zotac htpc using amd e350 and samsung 840 evo that after this week's update started faililng to load amd ahci driver while booting win7 x64, could not even enter safe mode. Format.... Reply
  • Senti - Friday, December 12, 2014 - link

    I see now KB3004394 update offered that removes KB3004394 update, haha. Reply
  • Senti - Friday, December 12, 2014 - link

    KB3024777 update offered*

    Sigh, no edit...
  • richough3 - Friday, December 12, 2014 - link

    KB3004394 would also stop Windows Updates from working properly as well. Reply
  • FrozenGiraffe - Friday, December 12, 2014 - link

    Thank you for this comment. KB3004394 was showing in my update history, but was not in the list of Installed updates. KB3024777 was installed automatically last night and removed it.

    Hope this will stop sudden "Not Genuine Windows" warnings...
  • ExarKun333 - Friday, December 12, 2014 - link

    Thanks for the article. Just removed the update myself....was wondering why it asked for re-activation a few days ago...:)

    For those that might not know, this is how you remove it, if it has already installed:

    Go to Control Panel
    go into "programs and features"
    then into "view install updates" (at the top left)
    scroll down to the "Microsoft Windows" section.
    uninstall KB3004394
  • toyotabedzrock - Friday, December 12, 2014 - link

    I bet they are using old driver signing certs.
    Windows Server 2003 had a cert issue a month or two ago that required setting the system time back to get updates.
  • notathome - Sunday, December 14, 2014 - link

    This update is making Windows request that it be re activated on my PC. I went to uninstall this update and it is not there. It is listed as having been installed in Windows update, but it is not listed in programs and features. This is driving me nuts. I can not go 5 minutes without it popping up a window asking for it to be activated. Reply
  • djturner83 - Monday, December 15, 2014 - link

    Tryed a clean install of windows 7 the other day and couldnt install amd graphics driver or usb 3. Bastards i thought id somehow fryed the mobo Reply
  • oreobox - Tuesday, December 16, 2014 - link

    Anyone to share the KB3004394 for Windows 7??
    I want to download it but MS drop it from the web...

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