CM File Extension

What is CM file?

CM is a file extension commonly associated with CLEO Custom Mission files. CLEO Custom Mission format was developed by Rockstar Games. Files with CM extension may be used by programs distributed for Windows platform. CM file belongs to the Game Files category just like 1509 other filename extensions listed in our database. Users are advised to use Grand Theft Auto: San Andreas software for managing CM files, although 1 other programs can also handle this type of file. Software named Grand Theft Auto: San Andreas was created by Rockstar Games, Inc.. In order to find more detailed information on the software and CM files, check the developer’s official website.

Programs which support CM file extension

The following listing features CM-compatible programs. Files with CM suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with CM extension?

Being unable to open files with CM extension can be have various origins. On the bright side, the most encountered issues pertaining to CLEO Custom Mission files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The list below will guide you through the process of addressing the encountered problem.

Step 1. Get the Grand Theft Auto: San Andreas

The main and most frequent cause precluding users form opening CM files is that no program that can handle CM files is installed on user’s system. This one is an easy one. Select Grand Theft Auto: San Andreas or one of the recommended programs (for example, CLEO) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support CM files, classified according to system platforms for which they are available. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Grand Theft Auto: San Andreas website and download the installer.

Step 2. Verify the you have the latest version of Grand Theft Auto: San Andreas

You still cannot access CM files although Grand Theft Auto: San Andreas is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. The reason that Grand Theft Auto: San Andreas cannot handle files with CM may be that the software is outdated. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Grand Theft Auto: San Andreas.

Step 3. Associate CLEO Custom Mission files with Grand Theft Auto: San Andreas

If you have the latest version of Grand Theft Auto: San Andreas installed and the problem persists, select it as the default program to be used to manage CM on your device. The method is quite simple and varies little across operating systems.

Change the default application in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the CM file
• Select Choose another app → More apps
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Grand Theft Auto: San Andreas is installed. Now all that is left is to confirm your choice by selecting Always use this app to open CM files and clicking OK.

Change the default application in Mac OS

• By clicking right mouse button on the selected CM file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• From the list choose the appropriate program and confirm by clicking Change for all....
• Finally, a This change will be applied to all files with CM extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Verify that the CM is not faulty

Should the problem still occur after following steps 1-3, check if the CM file is valid. Being unable to access the file can be related to various issues.

1. Check the CM file for viruses or malware

If the file is infected, the malware that resides in the CM file hinders attempts to open it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the CM file is indeed infected follow the instructions below.

2. Ensure the file with CM extension is complete and error-free

If you obtained the problematic CM file from a third party, ask them to supply you with another copy. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with CM extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the CLEO Custom Mission file again.

4. Verify that your device fulfills the requirements to be able to open Grand Theft Auto: San Andreas

If the systems has insufficient resources to open CM files, try closing all currently running applications and try again.

5. Check if you have the latest updates to the operating system and drivers

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with CLEO Custom Mission files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle CM files.

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