Fixes for Windows 7 SP1 Multi Monitor Bug

win7[German]Microsoft has released an update to fix the multi monitor bug in Windows 7 SP1 – but the first attempt failed. Now are multiple updates out that seems to fix the multi monitor issue.


Update KB4034664/KB4034679 is causing the issue

After August 2017 patch day, users complained about display problems on the second monitor in dual-monitor mode. I had reported about these details in the blog post Windows Update KB4034664 is causing trouble on 2nd screen and suggested some workarounds. 

Fehlende Icons nach Update KB4034664

The Microsoft updates KB4034664 and KB4034679 for Windows 7 and Windows Server 2008 R2 were identified as the cause of this problem. The problem occurs when the second monitor has negative coordinates for display (see screenshot below) and has been confirmed by Microsoft (see my German blog post Microsoft bestätigt Multimonitor-Bug in KB4034664/KB4034670).


A first fix with Update KB4039884 failed

On August 25, 2017 Microsoft released update KB4039884 for Windows 7 SP1 and Windows Server 2008 R2 Service Pack. According to the kb article, it should fix the multi monitor bug. But this update causes other issues (see Windows 7: KB4039884 fixes dual monitor rendering bug). The patch has been pulled.


Additional fixes?

On August 30, 2017 Microsoft released revision 34 for Update KB4039884 in Microsoft Update Catalog. German blog reader Info noted that within this comment an. And German blog reader Eric commented an:

The update has been re-released, note the V2 in file name:

Fixed problems with this update. If you want to install this update, you should uninstall the old version of KB4039884 first.

German blog reader Eric geodät confirmed, that the revised update fixed the dual monitor bug. But this packet needs to be downloaded and installed manually. And the old update has to be uninstalled first. 

Final fixes with September Update

German blog reader Info noted within this comment, that Microsoft provided a global fix at September patch day (09/12/2017) with the following updates:

I haven't verified it by myself, but the kb articles mentions some fixes in graphic components and graphics crashes.

Similar articles:
Windows Update KB4034664 is causing trouble on 2nd screen
Windows 7: KB4039884 fixes dual monitor rendering bug 

Microsoft August 2017 Patchday Summary
Microsoft Office non-security updates (September 5, 2017)
More Microsoft Updates from 08/29/2017 and 09/05/2017
Microsoft September 2017 Patchday Summary
Patchday September 2017: Updates for Windows 7/8.1
Windows 10 Updates September 12, 2017
Microsoft Office Security Updates (September 12, 2017)

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