RoryK

That's the one I've tried, several times, and it doesn't find anything to fix.

When I try to uninstall or upgrade Paint.NET I get a box saying I've tried using the windows troubleshooter from here but that didn't find anything to fix. "Troubleshooter couldn't identify the problem". Is it possible to get the old installer msi? Perhaps that'll help windows/paint.net do an uninstall. If not, any other tips? I'm on Windows 11 Pro 10.0.22621. thanks, Rory