Apps not working in Windows 11 can be a real nuisance, and many users face this problem after updating the operating system or installing new software. Sometimes, the application does not open, crashes, or shows compatibility-related error messages. Most commonly, the main reason for the application compatibility error on Windows 11 is the outdated version, the operating system requirements, dependencies, and Windows update-related changes. If the application was designed for older Windows versions, it might not work properly on the latest Windows version.