Mysterious Update KB3024777 for Windows 7/Windows Server 2008 R2 revealed–Just a fix for KB 3004394

win7 [German edition]Microsoft has released Update KB3024777 for Windows 7 Service Pack 1 and Windows Server 2008 R2 SP1, which fix an issue with KB 3004394. Here a few further details about this Update, that has been an object for further speculations within several sites.


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Hell, Microsoft was fast! After December Patch day (12/19/2014) with KB 3004394 update disaster (see my articles Update KB3004394 breaks Root Certificate in Windows 7/ Windows Server 2008 R2 and Patchday: Windows Update error 800706F7) Microsoft finally has withdrawn this patch. Too many “collateral damages” has been observed (Windows Update has been broken, Defender doesn’t work anymore, Narrator and other assistive tools refuses to work and so on). My suggestion was to uninstall KB 3004394 (December-Update for das Windows Root-Certifikate) on Windows 7 and Windows Server 2008 R2.

Microsoft Update KB3024777 shall fix it

After login to my Windows 7 machine, I noticed this morning an Update KB3024777, just 29 KByte in size. So I decided to let it install and begun to do a Web search …

Well, I had pretty much time for my investigations, because installing Update KB3024777 required a reboot. And then I observed heavy Registry update activities along with heavy hard disc activities. Just before I accepted Update installation, I’ve tried to launch Narrator (this tool should also be affected by KB 3004394). Narrator doesn’t show up – until 5 minutes after Update install boot. Strange things must be happened.


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Werbung – meine Windows 8.1 Titel –

What does Update KB3024777 do?

Browsing the web for KB3024777 reveals articles like this or this, written a couple of hours before and speculating about a new Windows 7 update an it’s purpose. Now Microsoft’s support article for Update KB3024777 is online. It says:

The KB 3004394 update that was dated December 10, 2014 can cause additional problems on computers that are running Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2 SP1. This includes the inability to install future updates. This new update is available to remove KB 3004394 from your computer.
For more information about the KB 3004394 update, see the following Microsoft Knowledge Base article:

3004394 December 2014 update for Windows Root Certificate Program in Windows

In short: Update KB3024777 removes Update KB 3004394 from your Windows 7 and Windows Server 2008 R2 machine. Afterward, all blocked applications should be functional again, and also a broken Windows Update (Update error 800706F7) shold be fixed.

BTW: This update won’t be listed in “installed update”, because it does it’s job an vanishing from your machine. Because? There is no need, to uninstall this update after “installing” Zwinkerndes Smiley.

Or in other words:

Further reading:
Update KB3004394 breaks Root Certificate in Windows 7/ Windows Server 2008 R2
Patchday: Windows Update error 800706F7
December Update blocks ActiveX/Macro execution in Excel 2013


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5 Responses to Mysterious Update KB3024777 for Windows 7/Windows Server 2008 R2 revealed–Just a fix for KB 3004394

  1. Pingback: Microsoft releases ‘Silver Bullet’ patch KB 3024777 to eliminate KB 3004394 - news from Allwebsolutions.net

  2. Brian says:

    Heh, I had to uninstall the bad update before it would let me install the fix for it.

  3. Nick Fox says:

    I tried – four times – to install this ‘update’ and all I get is an error message saying ‘Windows Update Failed Code 1,’ so for me it didn’t work. Not being a techhead, I’m at a bit of a loss as to the next step I should take, in fact it would be fair to say that I”m confused by this whole thing.

    • Lindsy Van Gelder says:

      Nick, I’m getting the same error code and multiple failed installs. I’ve tried a couple of M’soft utilities — fixit and windowsupdatediagnostic — and they either crash with the same error code or say they’ve fixed it and didn’t.

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  5. Lindsy Van Gelder says:

    Update. I had read that it was impossible to manually remove 3004394 from the control panel, but I tried it anyway, and it seems to have worked. All the installs that have been bottled up are now installing.

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