ASP.NET MVC – Project Type not supported

Hi Folks,

A quick post, when upgrading from MVC 1 to MVC 2 you may get this error in Visual Studio 2008, or when using MVC 2 on a different dev box.

Project Type Not Supported, when trying to open the project file (*.csproj)

very simple to fix.

Open the project file it notepad (or notepad++), and change the guid

<ProjectTypeGuids>{603c0e0b-db56-11dc-be95-000d561079b0};

to

<ProjectTypeGuids>{F85E285D-A4E0-4152-9332-AB1D724D3325}

Then update ALL web.config files, changing the Version to 2.0.0.0, the public key guid stays the same 🙂

<add assembly="System.Web.Mvc, Version=1.0.0.0

To:

<add assembly="System.Web.Mvc, Version=2.0.0.0

Run all Unit Tests

Hope this helps

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