WIN SERVER 2008 SQL SERVER 2008 R2 -- DATABASE ENGINE + REPORTING SERVICE installed. http://myserverdomain/reportserver works fine. Sharepoint 2010 --- Installed, before I install Sharepoint 2010, I run the "Install Software Prerequisites", since my server doesn't have Internet connection, I manually download all those components(hot fix KB976462, Filter Pack 2.0, etc.) and then copy to server then do the installation. I am trying to install the 'Reporting Services Add-In for SharePoint'. (downloaded rsSharepoint_x64.msi), its rolling back the installation at the last step and showing me the message saying"Please Ensure Microsoft Sharepoint technologies is installed".