If you installed the May 2022 cumulative update on Windows 11, you might have noticed that many of the apps you use all the time aren’t working as they used to. KB5013943, the mandatory security update, is crashing certain apps that use .NET framework. In some cases, users are getting an error code: 0xc0000135.
A similar issue was reported in the optional update, but it was not widespread. The bug seems to have slipped into the production channel with May 2022 update and more users are affected this time. The crashes are common among apps that use .NET Framework and apps like Discord or Microsoft Teams are also affected.
Looking at Microsoft’s Feedback Hub confirms that app crashes started earlier today following the release of May 2022 updates. The culprit appears to be a compatibility issue between the NET framework and Windows 11. For those unaware, the .NET framework is a software development framework for building and running apps on Windows.
According to reports received by us, many apps appear to be affected. For example, the Corsair ICUE app does not work after installing the update, with Corsair Service failing to start and users keep getting error notifications.
Some people also flagged issues with ShareX, KeePass, Microsoft Teams and other apps like Visual Studio installer. One user on Feedback Hub claimed that they are unable to launch Microsoft Teams due to the error message “process exited with code 3221225781 (0xc0000135)”.
“I just installed Windows 11 Update KB5013943, and it breaks the Sound Blaster Command app. The app would not start, instead I get an error saying “sound blaster command unable to start correctly 0xc0000135″. Uninstalling KB5013943 update fixes the problem,” another user noted.
How to fix KB5013943 issues on Windows 11
Since the issue seems to be related to .NET Framework, some users are reportedly getting the following error after installing May 2022 cumulative update:
“The application was unable to start correctly (0xc0000135). Click OK to close the application”.
If you’re affected, there’s no official fix as of yet, but users have told us that reinstalling .NET frameworks (both 3.5 and 4.8) should resolve the problem.
If the .NET framework is not installed, you need to enable it manually. If it’s already enabled, you will need to disable and enable it again to fix the problem.
To fix app crashes caused by Windows 11 May 2022 update, follow these steps;
- Open Windows Search.
- Search “Turn Windows features on or off“.
- Disable and enable all .NET frameworks.
- Click on OK.
- Reboot your system.
We are not sure what caused the issue, but simply turning on the .NET frameworks resolves the problem.
In some cases, users are also running into Blue Screen of Death errors, with one Feedback Hub poster reporting:
“After installation of 2022-05 Cumulative Update for Windows 11 for x64-based Systems (KB5013943) and 022-05 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 11 for x64 (KB5013628) the Microsoft Studio 2 would fail to boot generating error BSOD “APC_Index_Mismatch”, The only way to boot the machine was to restart and then on the maintenance screen choose “reboot”. Then it would boot to the OS, repeating the error again on the next shutdown and restart. The problem seems intermittent”.
If for whatever reason, you can’t find .NET Framework in Add or remove features pop-up, you can alternatively search for it on Microsoft’s downloads website.
How to uninstall Windows 11 May 2022 update
Uninstalling a Windows update certainly comes in handy if your computer is acting strangely after the deployment of a recent patch.
It’s generally a good idea to install security updates as soon as possible and we don’t recommend removing the security updates unless necessary. If your device is not in a usable state, you’ll want to be able to roll back security updates, so you can fix app crashes or Blue Screen of Death errors until a new update can be released.
Thankfully, it is still possible to uninstall a security update if you installed it today or yesterday:
- Open Settings.
- Click on Windows Update.
- Click the Update history page.
- Locate Uninstall updates option under the “Related settings” section.
- Select the update.
- Click on Uninstall.