IIS: Choose the .NET Framework Version for Application Pool

Okay, with the upcoming Microsoft.NET Framework 4.0 (currently in Beta2 Stage), IIS Application Pool can be run under either Framework Version 2.0 or Framework Version 4.0. Logo_IIS7

If you should receive this error Message, just go switching the .NET Framework Version for the affected Application Pool under IIS.

Error: The application pool that you are trying to use has the ‘managedRuntimeVersion’ property set to ‘v2.0’. This application requires ‘v4.0’.
Error count: 1.

Open IIS

Navigate to the affected Server, Select Application Pools. Now double-click the DefaultAppPool and choose .NET Freamework v4.0.21006 (Beta2 atm)



you’re done!