IIS 7 .NET Extensibility component is required
[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at http://go.microsoft.com/fwlink/?linkid=34707.]
Topic Last Modified: 2010-06-15
Microsoft® Exchange Server 2010 Setup cannot continue because the required Internet Information Server (IIS) 7 .NET Extensibility component is not installed on the target server.
Before Exchange 2010 can use Windows PowerShell Remoting, the IIS 7 .NET Extensibility component must be installed on the target server.
To address this error, use Server Manager to install the IIS 7 .NET Extensibility component on this server and then rerun Exchange 2010 setup.
Install the IIS 7 .NET Extensibility component in Windows Server 2008 or in Windows Server 2008 R2 by using the Server Manager tool
Click Start, click Administrative Tools and then Server Manager.
In the left navigation pane, expand Roles, and then right-click Web Server (IIS) and select Add Role Services.
On the Select Role Services pane, scroll down to Application Development.
Select the check box under .NET Extensibility.
Click Next from the Select Role Services pane, and then click Install at the Confirm Installations Selections pane.
Click Close to exit the Add Role Services wizard.