Visual Studio 2010 – The project type is not supported by this installation.

I came back to a VS 2010 C# SharePoint project after a while and found it wouldn’t open the project.

The error: The project type is not supported by this installation.

This error generally means that the project type you are trying to open is not supported in that Visual Studio Installation. 🙂 Reasons this situation could come about is an improper sequence of Visual Studio add-on installs/patching, or simply having built the project on one VS install and opening it on another.


1. Check whether the VS2010 product you installed supports web development

Please see:
For VS2010 Express products:

For VS1010 retail products:
(Expand the node of “Product Feature”)

2. If you’re running VS2010 retail products Professional edition, Premium Edition, check Help Menu > About Microsoft Visual Studio > Installed products? Please check whether “Microsoft Visual Web Developer 2010” has been installed properly.

3. Delete the
If those 2 steps fail to yield a result, do what I did – open the Visual Studio project file .csproj for example in notepad, remove the values in the node, save and open again.

So, (in my project), I deleted the GUID values from the following node:


so it became:

<ProjectTypeGuids></ProjectTypeGuids> the file and open project again in Visual Studio. Project subsequently works.

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