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I get an error when I try to run PowerShell:

Internal Windows PowerShell error. Loading managed Windows PowerShell failed with error 80070002.

I am running Windows 7 Home Premium (64-bit). This error occurs whether I start PowerShell from the command line or from the start menu shortcut. Running as administrator does not solve the issue either.

How do I fix this problem, so that I can use PowerShell?

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up vote 1 down vote accepted

I used my laptop's system recovery feature to reinstall Windows, and then I was able to use PowerShell just fine.

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I know this topic is considerably old but since I also had this problem, you need to check to see if you have a powershell.exe.config or a powershell_ise.exe.config file in the ...\v1.0\ directory, rename/delete those files or completely patch the system (make sure there are no pending patches or reboots) and the problem should resolve itself:

http://connect.microsoft.com/PowerShell/feedback/details/689952/resolved-user-error-powershell-exe-fails-to-start-after-wmf-3-0-ctp1-is-installed#tabs

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This is caused by missing

Microsoft.PowerShell.ConsoleHost.dll

Which should be at

C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.PowerShell.ConsoleHost

It can be restored reinstalling Windows Management Framework

PowerShell failed with error 80070002 - Server Fault

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Have you tried reinstalling powershell? This sounds like a corrupted install.

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There is no way to reinstall PowerShell on Windows 7. – M. Dudley Nov 19 '11 at 20:13
    
I'm sorry. I thought you're using Windows XP... my fault. – wullxz Nov 19 '11 at 20:55

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