Exchange Server 2010 Service Pack 2 (SP2) was released today without the accompanying release notes. Until they are released, know that SP2 requires an additional role service for Client Access Servers to support the new Outlook Web App Mini feature: The IIS 6 WMI Compatibility component.
Before you install Exchange 2010 SP2 you need to add this role service using either of the two following methods.
From Windows Server Manager:
- Open Server Manager and navigate to Roles | Web Server (IIS)
- Right-click Web Server (IIS) and select Add Role Services
- Scroll down to IIS 6 Management Compatibility and select IIS 6 WMI Compatibility and click Install
From Windows Powershell:
- Open Windows Powershell as administrator
- Enter the following commands:
Now you can install Exchange 2010 SP2 as planned.