Error Message “The ‘IIS 6 WMI Compatibility’ component is required” During Exchange 2010 SP2 Upgrade

While attempting to upgrade an Exchange Server 2010 Client Access server to Service Pack 2 you may encounter the following error message.

The ‘IIS 6 WMI Compatibility’ component is required. Install the component via Server Manager.

Error message upgrading Exchange 2010 Client Access server to SP2

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.

PS C:\> Import-Module servermanager

PS C:\> Add-WindowsFeature Web-WMI

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

Click Retry on the Readiness Checks dialog box above, or if you’ve already cancelled the installation simply start it again.

You can also avoid the error by installing the Service Pack 2 upgrade from the command line. Open a command prompt and navigate to the folder where the Exchange 2010 SP2 files have been extracted, and run the following command:

C:\Admin\ex2010sp2>setup /mode:upgrade /installwindowscomponents

This will automatically install the required components for you when the upgrade process runs.