Addresses a known issue that might cause issues for some .NET Framework 3.5 apps or prevent those apps from opening. The affected apps use certain optional components in .NET Framework 3.5, such as Windows Communication Foundation (WCF) and Windows Workflow (WWF) components. Addresses a known issue that might cause your screen to flicker if you start your device in Safe Mode. Components that rely on explorer.exe, such as File Explorer, the Start menu, and the taskbar, might be affected and appear unstable.

Some of the other improvements coming with Windows 11 KB5013943 include:

Windows 11 KB5013943 (Build 22000.675) is available via Windows Update for Business, Microsoft Update Catalog, Windows Server Update Services (WSUS), and, of course, through Windows Update and Microsoft Update.

- Important: Microsoft to automatically begin upgrading devices to the latest versions if you are running a version closer to the EOS deadline

KB5013943 Patch Tuesday Update Is Available for Windows 11 - 18KB5013943 Patch Tuesday Update Is Available for Windows 11 - 6KB5013943 Patch Tuesday Update Is Available for Windows 11 - 13