How to open .MSO file extension?

If you cannot open a new file that has been saved in the .MSO format you need to download the appropriate software. The manufacturer of .MSO files is Microsoft; .MSO files belong to the Misc Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .MSO files. Activities performed in the order described should solve the problems with all the files in the .MSO format.