The project type is not supported by this installation

Question

Whenever I try to open a project (csproj) that\'s downloaded from the internet, most of the times, I get the

\"The project type is not s

Answer 1

Instead of searching fr the GUIDs, you can simply delete the GUIds tags. Then try opening the project again. The second time opening you should get a more reasonable error message.

For instance my issue was that I did not install SharePoint Developer Tools when I installed Visual Studio 2010 on my development Virtual Machine. So when I tried opennign the project after deleting the GUIDs, VS2010 told me the path it was looking for did not exist.

Therefore VS2010 was looking for a SharePoint library that was not installed. I simply had to run the install again, and then add that feature.

Answer 2

You could also try to run the following command:

devenv /ResetSkipPkgs

Answer 3

Open up the .csproj file for your solution in wordpad or some text editor. Look for the ProjectTypeGuids. They indicate the required supported types for your solutions. Search the internet these GUIDs to find out what they require. For example E53F8FEA-EAE0-44A6-8774-FFD645390401 means it requires "MVC 3.0"