What is the best program uninstaller for windows 11?

If the built-in program uninstaller for Windows 11 isn't working properly, there are several alternative solutions you can try:

1. Use Programs' Built-in Uninstallers
Sometimes, the software itself provides a manual uninstallation method:
Navigate to the program’s installation folder.
Run the uninstaller executable (often named uninstall.exe or similar).

2. Manual Uninstallation via Settings
Open Settings > Apps > Installed apps.
Locate the program and try to uninstall from there.

3. Remove via Registry and Files 
Use Registry Editor (regedit) to remove leftover entries (be careful—back up your registry first).
Delete program folders from Program Files or AppData.

4. Use Windows Troubleshooter
Windows includes a troubleshooter for Program Compatibility or Troubleshooting uninstallation issues.

Always be cautious when using third-party program uninstaller for Windows 11 or manually editing the registry. Ensure you download tools from reputable sources, and consider creating a system restore point before making significant changes.