Notes about the MSWMM file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The MSWMM file type is primarily associated with 'Windows Movie Maker' by Microsoft Corporation. With Windows Movie Maker, Windows XP delivers software that helps you create, edit, and share the home movies you make with either an analog or digital video camera. When your movies are complete, you can view them and share them using Windows Media Player for Windows XP. This is a project file and does not contain actual media; only pointers to it. If you need the actual movie, use the File | Save Movie menu option and you should end up with a .WMV file.
Detailed information for file extension MSWMM:
File classification: VideoIdentifying characters
Hex: D0 CF 11 E0 A1 B1 1A E1 00 , ASCII:
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.