Help! MP4s not working!

delreich44

Distinguished
Aug 27, 2011
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Hello! I recently ran a Malware/Spyware remover app and it may have messed around with the registry files while doing its cleaning. My .wmvs still play AND newer .mp4s are able to play after the incident, but my old .mp4s that I had before I ran the app can't be read at all. The WMP error code I get is: C00D1199. I can't even open them with VLC. I don't think the files are totally corrupted, it has the same sizes, they just can't be played. Would it have something to do with the ID3 tags/headers? Here's the options I tried to do so far:

1) Running CHKDSK
2) Run various 'system cleaner' apps that supposedly fixes registry files
3) Reinstalling WMP

If anyone has any ideas I'm open to them! Thanks for looking! :)