Microsoft SharePoint is not supported with version 4.0.30319.225 of the Microsoft .Net Runtime

Question

So, the story is the following:

I just joined a team of an existing sharepoint project, sharepoint is installed RTM on all environments, from DEV to production.

But because its 2 companies working for the same project, Me as a member of the 2nd company, my VM has .net framework 4.0 already installed.

So I was in charge of making some changes adding fields, features, etc.

And when I was going to use Enable-SP Feature I had this exception: I have 2 options so far:

1. Install SP1, and the June CU in all environments. http://support.microsoft.com/kb/2536599

2. Uninstall .net 4 from my environment.

3. Here comes, the question, is there another way to solve it?

Update1: by checking the logs I found more info:

A PlatformNotSupportedException occured while trying to acquire the local farm: System.PlatformNotSupportedException: Microsoft SharePoint is not supported with version 4.0.30319.225 of the Microsoft .Net Runtime. at Microsoft.SharePoint.Administration.SPConfigurationDatabase.get_Farm() at Microsoft.SharePoint.Administration.SPFarm.FindLocal(SPFarm& farm, Boolean& isJoined)

Answer 1

Since this is a PowerGUI issue, you can fix it by following this solution. Follow these steps.

1. Open your windows explorer and navigate to C:\Program Files (x86)\PowerGUI\ and open the configuration file ScriptEditor.exe.config.

2. Change the supportedRuntime version under Startup settings by removing the version=”v4.0″ as below

Final <Startup> element

    <startup useLegacyV2RuntimeActivationPolicy="true">
           <supportedRuntime version="v2.0.50727" />
    </startup>

No you can enjoy the powerful editor again.

Answer 2

I partially found the error.

POWERGUI tool is the guilty one, when I run the upgrade spsolution and install sp feature in the normal powershell window it works. In powerGUI it does not work.