The title explains it all just restored my computer and now any kind of videos files i try to play give me the error "Class not registered" what do i do?
btw, yes i did update all my video drivers.
Run SFC /scannow and check whether it helps. SFC /SCANNOW Command - System File Checker[2]=Performance Maintenance
I had this same problem and I was able to trace the cause of mine. I wanted to store document and program files on my D partition. To do this I had to create a new user for myself, so the OS would automatically store those files on D. Then a couple of months later I made a slideshow for a group I"m involved with and ran into the "class not registered error." To resolve this issue I had to locate the Windows Media Player program file in the Programs folder on C drive (the filename is wmplayer), and double-click it to launch the program. It then started adding the media files (audio, video, pics, etc.) to the new account I created under D drive. After this I was able to open and play these files with WMP.
Hope that helps someone out there.
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