Error msg "windows installer incorrectly installed" Windows 11.

[Alan Fribourg]

I can't install any *.msi programs. Windows 11 error message states that the Windows installer program is incorrectly installed. I have tried most of the remedies but most of them pertain to old versions of Windows and the registry locations suggested are different in Windows 11. Any help will be greatly appreciated. My system has many large phot and video programs installed, and I dread having to reinstall the system. I have already reinstalled some of my system backups and the problem persists. Any help would be greatly appreciated

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