How to fix error error-too-many-muxwaiters in Windows 11

Solution Steps

1. 1 First, identify which application is causing the error. Open Event Viewer by pressing Windows key + X and selecting 'Event Viewer'. Go to 'Windows Logs' > 'Application' and look for errors with source 'Application Error' or '.NET Runtime' that mention ERROR_TOO_MANY_MUXWAITERS. Note the application name and path.
2. 2 Update the problematic application to the latest version. Visit the software vendor's website and download the latest update. Many times, this error is a known bug that has been fixed in a newer release.
3. 3 If the application is a driver, update the driver. Press Windows key + X and select 'Device Manager'. Expand the relevant category (e.g., 'Display adapters', 'Network adapters'), right-click the device, and select 'Update driver'. Choose 'Search automatically for drivers'. This ensures the driver is compatible with Windows 11 and has no known thread management issues.
4. 4 Run a system file check: press Windows key + R, type 'sfc /scannow', and press Enter. This will scan and repair corrupted system files that might be causing the issue. Wait for it to complete.
5. 5 If the error persists, perform a clean boot to isolate the issue. Press Windows key + R, type 'msconfig', and press Enter. In the 'Services' tab, check 'Hide all Microsoft services', then click 'Disable all'. Go to the 'Startup' tab and click 'Open Task Manager'. Disable all startup items. Restart your PC. If the error stops, re-enable services one by one to find the culprit.