File Extension Library


.MASS File Extension

  • Category: Document Files

What are .MASS files and how to open them?

Can't open .MASS file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .MASS file.

What is a .MASS file extension?

.MASS file extension has been classified as Document Files.

.MASS is MASS-11 text document file

The mass file extension was used for a very old text format created by MASS-11 program. These documents were not in a plain text format, but in a binary form. MASS-11 was provided by Microsystems.


How to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .mass file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to fix problems with .MASS files

  1. You need to update the application that you normally use to open .MASS files. Only the latest version of the software supports the current .MASS file format
  2. You need to check the .MASS file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)