File Extension Library

.CM File Extension

  • Developer by: Rockstar Games
  • Category: Game Files

What are .CM files and how to open them?

Can't open .CM 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 .CM file.

What is a .CM file extension?

.CM file extension is created by Rockstar Games. .CM has been classified as Game Files.

.CM is CLEO Custom Mission

Custom mission created for Grand Theft Auto: San Andreas (GTA SA); similar to a CLEO .CS file, but saved as a mission instead of a custom script; used for adding extra missions, or levels, to the game; may be created with Sanny Builder, a GTA mod utility.

In order to use a CM file with GTA SA, it must be stored in the "game\CLEO" folder.

List of all softwares that can open the CLEO Custom Mission
Sanny Builder
Rockstar Games Grand Theft Auto: San Andreas
File Type 2 Cable Modem Configuration File
Category: Settings Files

Configuration file stored on a cable ISP network; fetched by the cable modem during the boot-up sequence; determines the maximum downstream and upstream transfer rates and tells the cable modem if there are any firmware updates available.

The CM file resides on the cable modem and typically is not transferred to the computer. CM files are referenced by the ISP and should not be opened manually.

How to fix problems with .CM files

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