Visual Studio 2019 - Incompatible The application which this project type is based on was not found

Question

After installing Visual Studio 2019 (previously I had 2017), some Web projects appear as

"Incompatible"

The application which this project type is based on was not found.

It still works on 2017 but I haven been able to figure out why I am getting this error.

Project type:

Web Site    {E24C65DC-7377-472B-9ABA-BC803B73C61A}

If I launch the VS Installer and install or uninstall any component and then open VS 2019 and my solution it loads fine WebSite and I can run it. If I close it and reopen it a 2nd time it becomes incompatible again.

Does anyone had the same issue?

Answer 1

I found the answer to this issue.. It has to do with the

*.user files.

In order to resolve the problem:

• I searched for all the files in the project directory with extension *.user
• and I removed them all
• last I reloaded the projects

And this fixed my problem.