The recent Windows 11 update KB5012643 and Windows 10 update KB5011831 broke games and apps on "certain GPUs" that run on the Microsoft's DirectX 9 API. Also present is a related D3D9On12 issue.
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Windows 11's latest optional update (KB5012643) is causing yet another problem, this time affecting .NET Framework 3.5 apps. Microsoft has released some workarounds but is working on a long-term fix.
The latest optional Windows 11 update 22000.652 (KB5012643) seems to have a bug in the Safe Mode that causes screen flickering. Thankfully, there appears to be an unofficial workaround available.
Microsoft has released a new optional Windows 11 build 22000.652 (KB5012643) which fixes a near-hour long OS startup delay issue, video subtitles bug, several TPM issues, and more.
Microsoft has released a new Windows 11 Release Preview Channel build 22000.651 under KB5012643. The new release brings several fixes and improvements including some related to TPM and Secure Boot.