If you complete all steps and still see , the issue is likely a Windows OS policy restriction (AppLocker, Controlled Folder Access) or a failing hard disk with file system corruption. Test by installing on a different Windows PC to isolate the cause.
The first step is to ensure the necessary Windows features are enabled. If you complete all steps and still see
This workaround bypasses the file association error entirely. To make it convenient: right-click UMC.exe → . If you complete all steps and still see
If the application is truly missing from your system, follow these steps to reinstall it correctly: If you complete all steps and still see