File Extension Library

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.MJ3 File Extension

  • Developer by: id Software LLC
  • Category: Various data Files

What are .MJ3 files and how to open them?

Can't open .MJ3 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 .MJ3 file.

What is a .MJ3 file extension?

.MJ3 file extension is created by id Software LLC. .MJ3 has been classified as Various data Files.

.MJ3 is id Software online sale file

The mj3 file extension were frequently used on files found on CD-ROMs with games based on id Software engine, such as DOOM or Heretic.

The purpose of  .mj3 files was to allow the user of one game, to buy online the other game. So for example on Heretic CD-ROM, there was mj3 file for DOOM game.


How to open:

These old files were used to purchase the game online, probably acted as some sort of link or ticket.

How to convert:

A conversion for .mj3 file seems unlikely and seems to be not possible.

How to fix problems with .MJ3 files

  1. You need to update the application that you normally use to open .MJ3 files. Only the latest version of the software supports the current .MJ3 file format
  2. You need to check the .MJ3 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)
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