This error usually happens if you have two SQL Server instances on the same box and someone removed one at some point.

http://support.microsoft.com/kb/956013

To work around this problem, open a command prompt, type the following command, and then press ENTER:

mofcomp "%programfiles(x86)%\Microsoft SQL Server\number\Shared\sqlmgmproviderxpsp2up.mof"

Note For this command to succeed, the Sqlmgmproviderxpsp2up.mof file must be present in the %programfiles(x86)%\Microsoft SQL Server\number\Shared folder.

The value of number depends on the version of SQL Server:nnn

 Collapse this tableExpand this table
Microsoft SQL Server 2012 110
Microsoft SQL Server 2008 R2 100
Microsoft SQL Server 2008 100
Microsoft SQL Server 2005 90

After you run the Mofcomp tool, restart the WMI service for the changes to take effect. The service name is Windows management Instrumentation.