Hi @connor_animate ,
Welcome to Microsoft Q&A!
By default, the VS2019 is installed at the location: C:\Program Files (x86)\Microsoft Visual Studio\2019\version.
If you have changed its installation location, you can check it by going to the Visual Studio installer > Modify > Installation locations tab.
You can launch your VS2019 and select “Open a project or solution” to open your .sln file.
If it doesn’t work, please check your System environment variables if there are two paths to dotnet.
C:\Program Files\dotnet
C:\Porgram Files (x86)\dotnet
If so, please delete this one: C:\Porgram Files (x86)\dotnet.
Then, restart your PC and open your project again.
Sincerely,
Anna
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