During my lab testing and installing Exchange Server 2010 on Windows Server 2008 R2 I keep receiving this pre-requisite that fails. The start mode for the Net. TCP Port Sharing service must be set to Automatic before Setup can continue. As far as I know (I might be wrong) this pre-requisite only fails the readiness check on Windows Server 2008 R2. In order to set the Net.TCP Port Sharing Service to Automatic at start-up do the following: Open Power Shell on the Windows 2008 R2 Server that you are trying to install Exchange 2010. Type: Set-Service NetTcpPortSharing -StartupType Automatic Hit enter. Run the Exchange installation wizard again and you should be…