10830327.mp4.mp4 90%

: Right-click the file and select Open with > Windows Media Player or the Movies & TV app. macOS : Double-click to open in QuickTime .

: Right-click the file, select Rename , and delete the extra .mp4 so the file ends only in .mp4 . Ensure that "File name extensions" is checked in the File Explorer View menu to see the hidden extensions. 10830327.mp4.mp4

: A user might have typed ".mp4" when renaming, while the computer was already hiding the original extension. : Right-click the file and select Open with

If the double extension ( .mp4.mp4 ) causes confusion or issues with your media library, you can easily rename it: Ensure that "File name extensions" is checked in

: Use the VLC Media Player , which is known for its ability to play nearly any video file, even if the naming is slightly corrupted. 2. Fixing the Redundant Extension