How to open .ONEPKG file extension?

If you cannot open a new file that has been saved in the .ONEPKG format you need to download the appropriate software. The manufacturer of .ONEPKG files is Microsoft; .ONEPKG files belong to the Backup 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 .ONEPKG files. Activities performed in the order described should solve the problems with all the files in the .ONEPKG format.

• What is .ONEPKG file?
• How to open .ONEPKG file?
• What is .ONEPKG file?