HomeWinBuzzer NewsMicrosoft Fixes Windows 11 App Crashing Glitch

Microsoft Fixes Windows 11 App Crashing Glitch

The Windows 11 bug was caused by Direct3D 9 and caused certain apps to crash. It was also found on Windows 10 but has now been fixed.


says it has finally fixed a longstanding Direct3D 9 bug in and . This issue was causing certain apps on the platform to randomly crash. This problem first appeared following an optional cumulative update back in April.

Of course, loads of Windows problems emerge that way. Microsoft says it has now used the Known Issue Rollback to solve the glitch.

“After installing KB5012643, Windows devices using certain GPUs might have apps close unexpectedly or intermittent issues with some apps which use Direct3D 9. You might also receive an error in Event Log in Windows Logs/Applications with faulting module d3d9on12.dll and exception code 0xc0000094,” Microsoft explains.

With Known Issue Rollback (KIR), the bug has been squashed, although Microsoft says it may take 24 hours to see the change:

“Please note that it might take up to 24 hours for the resolution to propagate automatically to consumer devices and non-managed business devices. Restarting your Windows device might help the resolution apply to your device faster”.

Furthermore, Microsoft is rolling out special group policies that tackle the problem, which you can find details on here.

Regular Occurrence

Issues coming from optional updates are a frequent problem. Earlier this month, the Windows 11 KB5012643 optional update is causing issues in two .NET Framework 3.5 components.

Microsoft confirmed KB5012643 was causing problems for apps that use .NET Framework 3.5.

Specifically, apps that have optional Windows components like Windows Workflow (WWF) or Windows Communication Foundation (WCF). The company said .NET Framework 3.5 apps with these components may stop working after KB5012543 (also known as OS Build 22000.652) is installed.

Tip of the day: If you need to Create, Delete or Resize Partitions, Windows has everything you thanks to the built-in Disk Management-tool.

Luke Jones
Luke Jones
Luke has been writing about all things tech for more than five years. He is following Microsoft closely to bring you the latest news about Windows, Office, Azure, Skype, HoloLens and all the rest of their products.