How to fix error error-call-not-implemented in Windows 11

Solution Steps

1. 1 Press Windows key + R, type 'optionalfeatures' and press Enter. The Windows Features dialog opens. Look for features like '.NET Framework 3.5' or 'Windows Subsystem for Linux' that might be unchecked. If the error relates to a specific feature, check its box and click OK. Windows will install the necessary components—this often resolves 'not implemented' errors.
2. 2 If you suspect a corrupted system file, open Terminal as admin (Windows key + X → Terminal (Admin)) and run 'sfc /scannow'. This checks and repairs system files. Wait for the scan to finish and restart if it finds issues.
3. 3 If SFC doesn't help, run 'DISM /Online /Cleanup-Image /RestoreHealth' in the same terminal. This repairs the Windows image itself. After completion, restart your PC.
4. 4 Check if the problematic program is compatible with Windows 11. Right-click the program's shortcut, select 'Properties', go to the 'Compatibility' tab, and try running it in compatibility mode for an older Windows version (e.g., Windows 8). This can trick the program into using older APIs that are implemented.
5. 5 If the error occurs in a specific app, reinstall that app. Press Windows key + I to open Settings, go to Apps → Installed apps, find the app, click the three dots, and choose 'Uninstall'. Then download the latest version from the official website and install it.