What happens when you try to play them? Based on that, the .mov file extension might not be properly associated, or whatever application is associated might be damaged or corrupt.
Well, it used to be able to be run on a few programs, which have since either hung, or simply didn't play it. Re-installing Quicktime seems to have worked for quicktime, but for some reason, the DIV Codec doesn't seem to want to play .mov's anymore.
If nobody's come up with a better suggestion, you may find doing 'sfc /scannow' at the Run prompt fixes this, or that reinstalling Windows "over the top" (technically called an in-place reinstallation, meaning you let it repair instead of nuking the drive, first) may be easier than reinstalling the codec. Depends on your level of comfort and how much time you want to put at it.
If it were me, at work, I'd probably do those in preference to re-installing the codec, because I can let either process run in the background while I'm working on other problems. But that's not necessarily the most useful thing for a home user. :/ Good luck.
If you do either one, be sure to let Windows Update run again, afterwards.
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Try another mov entirely, one you know used to work?
There may be some funky going on with the encoding.
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If it were me, at work, I'd probably do those in preference to re-installing the codec, because I can let either process run in the background while I'm working on other problems. But that's not necessarily the most useful thing for a home user. :/ Good luck.
If you do either one, be sure to let Windows Update run again, afterwards.
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