I've had an ongoing problem with WMP 12 on Win7 x64. After playing an audio or video file and then shutting it down, it's been unable to start up again. After a long pause, it would give the reason as: "Server execution failed" An OS reboot has been the only way to play another audio or video file. I saw the thread titled "Windows Media Player 12 issue"Code:hXXp://windows7forums.com/windows-7-software/28326-windows-media-player-12-issue.html[Note the "XX": They won't let me post a working link. I don't have enough posts.] Slightly different problem, same result. I tried the cure: Control Panel\Programs and Features\Turn Windows features on or off\Uncheck all Media Features\Reboot\recheck WMP only. Problem solved. I can now play a file, shut WMP down, restart it and play another file.