Microsoft Confirms New Bug in Windows 11 Cumulative Update KB5012643

Microsoft has just confirmed a new issue caused by a recent Windows 11 cumulative update, with the company also providing users with a workaround until a full fix goes live.

Microsoft says the update in question is KB5012643, and it breaks down some apps that are using .NET Framework 3.5.

The software giant explains that the affected apps might either malfunction or fail to start completely.

“After installing KB5012643, some .NET Framework 3.5 apps might have issues or might fail to open. Affected apps are using certain optional components in .NET Framework 3.5, such as Windows Communication Foundation (WCF) and Windows Workflow (WWF) components,” it says.

Surprisingly, the workaround is actually the removal of the update from the devices where it’s installed, with Microsoft also adding that users can re-enable the broken components in Windows 11 to bring thin… (read more)

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