In an update to the Windows 11 known issues, Microsoft explains KB5012643 is 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). Microsoft explains .NET Framework 3.5 apps with these components may stop working after KB5012543 (also known as OS Build 22000.652) is installed. Microsoft does have a workaround in place to mitigate the issue until a stable fix is released. The company says users should simply uninstall KB5012643 from Windows 11.: “To mitigate this issue, you can uninstall KB5012643. To do this, select the Start button and type, Windows Update Settings, and select it. On the Windows Update settings window, select View Update History then select Uninstall Update. Find KB5012643 in the list and select it, then select Uninstall.”
Other Option
If the update will not uninstall, Microsoft says users can take the advanced mitigation route and re-enable .NET Framework 3.5 and the components. However, this requires running the following commands in an elevated command prompt: dism /online /enable-feature /featurename:netfx3 /all dism /online /enable-feature /featurename:WCF-HTTP-Activation dism /online /enable-feature /featurename:WCF-NonHTTP-Activation I don’t advise taking this mitigation path unless you are confident playing around with your Windows system. Microsoft is currently classing this issue as “mitigated” but a permanent fix is in the works and should be released shortly. Tip of the day: Windows lets you use Cortana to translate sentences, words, or phrases, with the results read back to you automatically. This makes it particularly useful for group scenarios, but you can also type if you’re unsure about pronunciation. Cortana translation sports an impressive 40 languages and utilizes machine learning to provide natural results in many cases. Check our full guide to learn how to use Cortana for quick translations.
