Today I was installing an Operations Manager 2007 R2 Agent on a customer’s server. The installation had almost completed when an error dialog box appeared (shown below) stating that the installation routine failed to uninstall the SDK MOF. The installation routine then initiated a rollback action.

I did a search using the Bing search engine and quickly came across a blog posting by Kare Rude Andersen that addressed the problem and provided a solution.  The error is the result of the WMI (Windows Management Instumentation) repository being in an inconsistent state.

If you are receiving the error shown above, right-click on the Computer icon (or My Computer if running an OS prior to Windows Server 2008) and select Properties from the pop-up menu.  On the System properties dialog box (shown below), locate the processor and memory information. If a WMI repository inconsistency exists, no information will be shown for these items.

To return the WMI repository to a consistent state, open a command prompt and navigate to the C:\Windows\system32\wbem directory. Run the following command:

winmgmt /verifyrepository

If the result returned by running the above command is “WMI repository is INCONSISTENT,” run  the following command to salvage the repository:

winmgmt /salvagerepository

If the repository is salvaged successfully, the above command will complete with the result “WMI repository has been salvaged.” To complete the operation, run the following command:

for /f %s in (‘dir /b *.mof *.mfl’) do mofcomp %s

Apparently, in some cases, it might be necessary to copy *.mof files from another computer running the same OS version and type (x86/x64) and rerun the final command listed above. In my case, this was not necessary. After salvaging the WMI repository, your Operations Manager 2007 R2 Agent should install successfully.