The issue appears to affect apps that use the .NET Framework. As Windows Latest reports, users have complained about the following programs via Microsoft’s Feedback Hub:

Microsoft TeamsDiscordShareXKeePassVisual Studio InstallerCorsair ICUECorsair Service

The bug doesn’t affect all users of these apps, but if you see this error message, you’ll know what’s causing it:

“The application was unable to start correctly (0xc0000135). Click OK to close the application.”

As a result, it’s worth holding off installing the update if you haven’t already. It’s technically mandatory, so may be automatically downloaded in the background, but installation requires a restart which you can avoid.

Microsoft is yet to release a fix, but two unofficial fixes may solve the issue for you.

How to fix Windows 11 KB5013943 app crashes

While we wait for an official patch, another potential solution is available. The bug appears to be caused by a compatibility issue between Windows 11 and the .NET Framework, so reinstalling both version 3.5 and 4.8 should solve the problem. Here’s how it’s done:

Click the search icon next to the Start menu, then type ‘turn windows features on or off’ Open the relevant option, and a window like below will appearUncheck the boxes next to ‘. NET Framework 3. 5 (includes . NET 2. 0 and 3. 0)’ and ‘. NET Framwork 4. 8 Advanced Services’, then re-check themClick ‘OK’ to confirm, then restart your device to apply changes

If that doesn’t work and the app crashes are proving very disruptive, you can also uninstall the update completely. However, this process will only work if you installed it today or yesterday:

Open SettingsClick ‘Windows Update’ from the left pane, then ‘Update history’ Scroll down to the section marked ‘Related settings’ and click ‘Uninstall updates’ Any updates that have recently been installed are displayed here. Next to the KB5013943 update, click ‘Uninstall’, then ‘Uninstall’ once more to confirm Once complete, restart your device to apply changes

If that doesn’t solve the problem either, it may be caused by the earlier optional update where app crashes were first reported. In that scenario, or if more than a day has passed since you installed the update, you’ll need to wait for Microsoft to release a patch.

Windows 11’s latest update is causing yet more issues (May 2022) Windows 11’s latest bug is preventing updates from installing (April 2022) Windows 11: Everything you need to know

As the resident expert on Windows, Senior Staff Writer Anyron’s main focus is PCs and laptops. Much of the rest of his time is split between smartphones, tablets and audio, with a particular focus on Android devices.