WMI invalid class after SP2 install

Question

Recently installed SP2 for Windows 2008 server x64.  Out of numerous WMI monitors on some of our IIS servers, I have two that are now coming back with 'Unexpected Error Occurred. Invalid Class'.

If I search for WMI monitors to add, both items return as valid for the specific systems in question.  Has anyone else had any issues similar to this?

The two query strings are:

SELECT WorkerProcessRestarts FROM Win32_PerfFormattedData_ASPNET64_ASPNET

and

SELECT RequestWaitTime FROM Win32_PerfFormattedData_ASPNET2050727_ASPNETAppsv2050727 WHERE Name='__Total__'

morgolis · Accepted Answer

I'm betting that the classes are missing in WMI on those two servers and will likely need to be rebuilt.

You can try running this command in a command line window running as 'Administrator' -->  WMIADAP /F

You can google and download a freeware WMI browser and verify that they are missing, but I'm pretty sure they haven't been built in WMI.