What is the exact error message that you are getting?
Check if the video is corrupted. Test with another media player like VLC.The best solution for HEVC video playback issues we suggest is converting HEVC/H.265 videos to the widely-accepted H.264 MP4 files with an online HEVC video converter.
If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files.
Hope this resolves your Query !!
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