Microsoft recommended that Windows 11 users uninstall KB5012643, an optional update that brings fixes to the operating system, but causing crashes in several apps, especially those using the .NET Framework 3.5. Crashes consist of unexpected crashes from installation to upgrade.

The .NET Framework is software that installs and runs it. Applications not developed by Microsoft. It works similarly to a Java virtual machine, except that it is specific to Windows. It was precisely the integration of this platform with certain applications that was affected on the desktop of those who installed KB5012643 for Windows 11 version 21H2.

The good news is that the bug detected Does not affect all applications built on the .NET 3.5 Framework. According to an update to a Microsoft support document originally published on April 25, the company announced that only software that uses components such as Windows Communication Foundation (WCF) and Windows Workflow (WWF) is affected.

How to uninstall KB5012643 update?

In any case, Microsoft clearly recommends in the document: Manually uninstalled update KB5012643. It is important to note that this is an optional update, making the number of affected users much lower than mandatory updates that are automatically installed.

To uninstall the update, simply follow the steps below:

  1. open menu Beginning and search Windows Update Settings;
  2. In Windows Update, select the option update history;
  3. Scroll down and select remove updates;
  4. In the new open screen, find and select to KB5012643 in the displayed list;
  5. click remove.

Source: Tec Mundo

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