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Home/ Questions/Q 9186049
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Editorial Team
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Editorial Team
Asked: June 17, 20262026-06-17T19:25:44+00:00 2026-06-17T19:25:44+00:00

I have a visual studio 2010 Ultimate SP1 using a solution where two of

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I have a visual studio 2010 Ultimate SP1 using a solution where two of my .csproj projects will not open. The error i get is the project type is not supported by this installation.

It’s not a problem with the solution as these projects open with no issue on all other workstations.

My project type guid’s are and seem to be the same for both projects that are unavailable within the solution:

{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}

{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}

I checked all of my prerequisites and they seem to be installed correctly. I noticed when opening up visual studio sometimes the license name is different. I’m wondering if there could be a conflict with a previous install? Any suggestions would be helpful.

Thanks.

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  1. Editorial Team
    Editorial Team
    2026-06-17T19:25:46+00:00Added an answer on June 17, 2026 at 7:25 pm

    It looks like your missing Portable Library tools. Are you sure it’s installed?

    If not, http://visualstudiogallery.msdn.microsoft.com/b0e0b5e9-e138-410b-ad10-00cb3caf4981

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