When upgrading your Exchange 2010 CAS to SP2 you may encounter the following error:
The "IIS WMI Compatibility" component is required. Install the component via the Web Server Manager.
The IIS6 WMI Compatibility is a new prerequisites for upgrading to Exchange 2010 SP2
To upgrade from the command line without erros run:
setup.com /m:upgrade /InstallWindowsComponents
To upgrade from the GUI without erros
Before you run the Exchange SP2 setup program on your CAS Servers do the following: