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c#visual-studioreferenceproject

The referenced project x does not exists

Hej All, I upgraded my solutions of a project from vs2008 to vs2010.

But right now I have a weird problem. I reference a project in multiple solutions (3 solutions) In 2 of those solutions the referencing goes wrong.

I am able to add the reference (project reference) but when I build I got the warning the referenced project x does not exists. And errors that I have to add an reference.

I already deleted and added the project again, same with the references but no result.

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Does anybody have any idea?

Greetz,

Jonathan

Solution

  • Make sure your project is not using the ".NET Framework 4 Client Profile" as target framework, this is the most common source of these problems.

    You can check this in the project properties under Target Framework.

    From MSDN:

    If you are targeting the .NET Framework 4 Client Profile, you cannot reference an assembly that is not in the .NET Framework 4 Client Profile. Instead you must target the .NET Framework 4. For more information, see Troubleshooting .NET Framework Targeting Errors.