Several new prerequisites have been added when installing the Client Access server role. Prior to installing Exchange 2010 SP2, you must install these new prerequisites on servers that have the Client Access server role installed. If the prerequisites aren’t installed, Setup will fail.

To install the prerequisites on Client Access servers, do the following:

Windows Server 2008 SP2

  1. Open Server Manager.
  2. Select Roles.
  3. Under Web Server (IIS), select Add Role Services.
  4. In the Add Role Services wizard, on the Select Role Services page, select the following Windows features:
    • IIS 6 WMI Compatibility
    • ASP.NET
    • ISAPI Filters
    • Client Certificate Mapping Authentication
    • Directory Browsing
    • HTTP Errors
    • HTTP Logging
    • HTTP Redirection
    • Tracing
    • Request Monitor
    • Static Content
  5. Click Next and then Install.


Import-Module ServerManager

Add-WindowsFeature Web-WMI,Web-Asp-Net,Web-ISAPI-Filter,Web-Client-Auth,Web-Dir-Browsing,Web-Http-Errors,Web-Http-Logging,Web-Http-Redirect,Web-Http-Tracing,Web-Request-Monitor,Web-Static-Content