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
Had the same issue with "The project type is not supported by this installation" for web projects in VS 2010 Premium.
devenv /ResetSkipPkgs
and GUIDs magic did not help.
Same projects were working fine on a neighbor box with VS 2010 Premium.
As it turned out the only difference was that my VS installation was missing the following installed products (can be found in VS About dialog):
Add/Remove programs -> VS 2010 -> Customize -> Check the above products - and the problem was solved.