Exchange 2010 Setup: Unable to read data from the Metabase. Ensure that Microsoft Internet Information Services is installed.

I was building an test Exchange 2010 server as an VM. Exchange Setup gave an error on CAS and Mailbox roles (on pre-requests window). The error was

Unable to read data from the Metabase. Ensure that Microsoft Internet Information Services is installed.
Unable to access the 'Default Web Site' on this computer.

I checked IIS was installed and I was able to browse the default web site/page. what gives?

On this Exchange 2010 Prerequisites Technet page (http://technet.microsoft.com/en-us/library/bb691354(EXCHG.140).aspx), I identified the powershell command to install all the correct IIS components to install all three roles (CAS/HUB/Mailbox) on a same computer.

1. Open Power Shell in elevated mode (runas administrator)
2. Type the following (or copy paste)
• Import-Module ServerManager
• Add-WindowsFeature NET-Framework,RSAT-ADDS,Web-Server,Web-Basic-Auth,Web-Windows-Auth,Web-Metabase,Web-Net-Ext,Web-Lgcy-Mgmt-Console,WAS-Process-Model,RSAT-Web-Server,Web-ISAPI-Ext,Web-Digest-Auth,Web-Dyn-Compression,NET-HTTP-Activation,RPC-Over-HTTP-Proxy –Restart
3. The second command will install the required components and reboot the server
4. After reboot, open the Power Shell again in elevated mode.
5. Type this to set NetTcpPortSharing service to automatic.
• Set-Service NetTcpPortSharing -StartupType Automatic
6. Close the Powershell. Try running Exchange 2010 setup again.