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

I had the same problem opening the NuGet solution with VS 2010 Ultimate, but the following command fixed it:

devenv /ResetSkipPkgs

Answer 2

As a addition to this, 'the project type is not supported by this installation' can occur if you're trying to open a project on a computer which does not contain the framework version that is targeted.

In my case I was trying to open a class library which was created on a machine with VS2012 and had defaulted the targeted framework to 4.5. Since I knew this library wasn't using any 4.5 bits, I resolved the issue by editing the .csproj file from <TargetFrameworkVersion>v4.5</TargetFrameworkVersion> to <TargetFrameworkVersion>v4.0</TargetFrameworkVersion> (or whatever is appropriate for your project) and the library opened.

Answer 3

You might need to install the "Microsoft Web Platform Installer" from http://www.microsoft.com/web/downloads/platform.aspx

Answer 4

My problems because this line in project (.csproj) has newline (vs2010)

<ProjectTypeGuids>
</ProjectTypeGuids>

When i update to

<ProjectTypeGuids></ProjectTypeGuids>

I can open again

Answer 5

Problem for me was my ProjectTypeGuid was MVC4 but I didn't have that installed on the target server. The solution was to change the ProjectTypeGuids to that of a Class Library, and include the MVC DLLs with the project rather than the project pick them up from the GAC.

Answer 6

For Visual Studio 2010 (prolly also for other versions):

If you are opening an ASP.NET MVC project make sure that the correct MVC version is installed on your PC. If you try to open an ASP.NET MVC 3 project, first close all your visual studio instances and install MVC3: http://www.microsoft.com/en-us/download/details.aspx?id=1491

For other ASP.NET MVC versions download them from www.asp.net/mvc or via Web Platform Installer 4.0.