I have upgraded from Vista Ultimate to Windows 7 Ultimate and Media Center is not working correctly. I suspect the problem is that I had installed some add-ins to MC in Vista and they may be preventing the Win7 version from working correctly. For example the advertised NetFlix option in MC is not present. One of the problems with Media Center maintenance is there doesn't seem to be anyway to manage add-ins. I disabled Media Center through the "Programs and Features" applet in the Control Panel and then re-enabled it, but this did not solve the problem. NetFlix is still not there. Does anybody know to completely remove Media Center and all of the associated Registry entries and then re-install? PS: Problem solved. See solution in replies.