visual studio - incompatible version

Question

I had to move a visual Basic project from one computer to another (COVID relocation). I am now back on the original machine and cannot load the solution which was amended on the other machine. It reports that the project is "incompatible". Every module or form fails to load with the same error code 0x80004005.

I have imported environment settings from the other machine.
Both machines were/are running Visual Studio Community 2019 16.11.0

What do I do to get the project to open so that I can work on it?

Mal B

Answer 1

Hi @Malcolm Bacchus ,

Welcome to Microsoft Q&A!

What is your project type? Does it use the same Target Framework?
Please create a new project and check if the situation only appears in this project or not.

You can try to delete the hidden .vs, bin and obj folders in the project folder and reopen the project.

Sincerely,
Anna

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Answer 2

Deleting those folders worked and rebuilding looks as if it had worked. So thank you for that. On doing that I saw that the compiler flags that the target framework is netcoreapp.3.0 so I have updated that to use Net 5.0. Presumably the problem arose there.