Patchday: Windows 11 Updates (November 9, 2021)

Windows[German]On November 9, 2021 (second Tuesday of the month, Patchday at Microsoft), Microsoft has also released a cumulative update for Windows 11, which was released on October 5, 2021. The update is supposed to fix various issues (including performance issues with AMD CPUs, Explorer issues, etc.). Here are some details about this update.


A list of the updates can be found on this Microsoft website. I have pulled out the details below. 

Update KB5007215 f0r Windows 11

Cumulative Update KB5007215 raises the OS build for Windows 11 to 22000.318 and includes quality improvements as well as security patches, but no new OS features. Regarding the security fixes, it just says in general terms: Updates security for your Windows operating system. The main changes that this update makes include:

Addresses an issue in which certain apps might have unexpected results when rendering some user interface elements or when drawing within the app. You might encounter this issue with apps that use GDI+ and set a zero (0) width pen object on displays with high dots per inch (DPI) or resolution, or if the app is using scaling.

It fixes the bugs addressed in the post Windows 11: Out-of-band update KB5008295 fixes app start issues (2021/11/05), e.g. in the Snipping tool. Microsoft is not aware of any issues related to this cumulative security update. 

Note: Not listed is probably the fix for performance degradation on AMD Ryzen processors included in the cumulative update. Feedback from users says that the Explorer memory leak is not fixed (see Windows 11: File Explorer has a Memory Leak).

Microsoft notes that this update makes quality improvements to the servicing stack (is responsible for Microsoft updates). This update is automatically downloaded and installed by Windows Update, but is also available from the Microsoft Update Catalog and via WSUS and WUfB. More details can be found in the KB article here

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