How to fix error error-sem-timeout in Windows 11

Solution Steps

1. 1 Press Ctrl+Shift+Esc to open Task Manager. Go to the 'Processes' tab and look for any program that is 'Not responding' or using high CPU. Right-click it and select 'End task'. This frees up the semaphore lock that might be stuck. If the error was caused by a hung process, this resolves it.
2. 2 If the error occurs with a specific device (like a printer or external drive), unplug it and restart your PC. After reboot, reconnect the device. This resets the hardware and clears any stuck semaphores.
3. 3 Update your device drivers: Press Windows key + X and select 'Device Manager'. Expand categories, right-click each device, and choose 'Update driver' > 'Search automatically'. This ensures drivers are compatible and not causing timeouts.
4. 4 Run a disk check to rule out file system issues: Open Terminal as admin (Windows key + X → Terminal (Admin)), type 'chkdsk C: /f' and press Enter. You'll be prompted to schedule it for next restart—type 'Y' and restart. This checks for and fixes disk errors that could cause delays.
5. 5 If the error persists, perform a clean boot to identify conflicting software: Press Windows key + R, type 'msconfig', go to the 'Services' tab, check 'Hide all Microsoft services', click 'Disable all', then go to 'Startup' and click 'Open Task Manager' to disable all startup items. Restart and see if the error goes away. If it does, re-enable services one by one to find the culprit.