The MSI file format used by Windows Installer (MSI) is used specifically for installation – this differs from the EXE format sometimes used to run installers, which are simple executable files that ...
This program is not responding. To return to Windows and check the status of the program, click Cancel. If you choose to end the program immediately, you will lose any unsaved data. To end the program ...
Seriously, once PowerToys is installed, all you have to do is right-click on the offending file and choose "Unlock with Locksmith." Then a window pops up telling you exactly what program is locking ...