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msiexec.exe errors
Since some recent windows 11 update (if I re-install windows pre from a support-led iso it is OK) I can not install/uninstall or update various third party programs (popular ones like Paint.net, char...
I have this exact issue too. Trying to start the Windows Installer service will also not work for me.
I've tried everything except re-installing Windows.
I've tried everything except re-installing Windows.
I seem to have fixed it!
When I started msiexec.exe in a debugger, I noticed a message about application verification. After some googling, I started appverif.exe. I added msiexec.exe to this and then pressed 'restore to defaults' and removed it again. After that everything works