Exchange 2010 SP2 Update Issue

Ever wonder why you are getting an error for when running Client Access Role Prerequisities 'The IIS 6 WMI Compatibility' component is required. Install the component via Server Manager.
This error occurs because a new feature of Exchange 2010 SP2 called Outlook Web App Mini requires that IIS component to be installed on Client Access servers.
You can install the component manually by opening a PowerShell window and running the following commands.


Import-Module servermanager
Add-WindowsFeature Web-WMI
You should get an output as below


Success Restart Needed Exit Code Feature Result
------- -------------- --------- --------------
True    No             Success   {IIS 6 WMI Compatibility}


or alternatively you can run the upgrade command using the following switch
setup /mode:upgrade /installwindowscomponents and upgraded the server