: A user might have typed ".mp4" when renaming, while the computer was already hiding the original extension.
: Before opening, right-click the file and use your installed antivirus or Microsoft Defender to scan it. 10830327.mp4.mp4
: 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. : A user might have typed "
Files with unusual names or double extensions can sometimes be a sign of suspicious origins. 10830327.mp4.mp4