It may also happen that software creators by updating their applications add compatibility with other, newer file formats.

You still cannot access MOZ-BACKUP files although Mozilla Firefox is installed on your system? Make sure that the software is up to date. Verify the you have the latest version of Mozilla Firefox If you want to download Mozilla Firefox installer in the most secured manner, we suggest you visit Mozilla website and download from their official repositories. The full list of programs grouped by operating systems can be found above. Select Mozilla Firefox or one of the recommended programs (for example, SeaMonkey) and download it from appropriate source and install on your system. Problems with opening and working with MOZ-BACKUP files are most probably having to do with no proper software compatible with MOZ-BACKUP files being present on your machine. We have prepared a listing of which will help you resolve your problems with MOZ-BACKUP files. In most cases they can be addressed swiftly and effectively without assistance from a specialist.

On the bright side, the most encountered issues pertaining to Mozilla Backup files aren’t complex. Problems with accessing MOZ-BACKUP may be due to various reasons. How to open file with MOZ-BACKUP extension?

Mozbackup