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I successfully updated a maui app to net9. The upgrade consisted of simply changing the net8 references in the csproj file. The app ran well but noticed some new control issues. Tried to downgrade the app back to net8 by changing the csproj references back to net8. I can clean and build the app with no errors. But, when debugging it, I get the errors below.
I've tried to uninstall the app through "Programs and Features" and I've tried Powershell RemoveApp. I beleie that's the issue. Is there another way to unregister this app such as deleting some of the builds?
This appears to be a much bigger problem associated with Windows 10 and latest updates. https://github.com/dotnet/maui/issues/25832
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Thanks for your sharing. Please follow the progress at GitHub and wait for their updates, thanks for your understanding.
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I am getting the same error message.
When I open a new blank MAUI project, give it a name and then try to run it, it fails.
I have not modified the default code in any way.
At the bottom of the screen the message ... 'deploy started' ... is displayed. This changes to ... 'Deploy succeeded' ... and the error pop-up appears.
configuration manager has deploy checked.