GMG File Extension

What is GMG file?

GMG is a file extension commonly associated with Global Mapper Grid Data Format files. GMG file format is compatible with software that can be installed on Windows system platform. GMG file format, along with 255 other file formats, belongs to the GIS Files category. Global Mapper is by far the most used program for working with GMG files. Global Mapper software was developed by Global Mapper Software LLC, and on its official website you may find more information about GMG files or the Global Mapper software program.

Programs which support GMG file extension

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

Updated: 06/28/2020

How to open file with GMG extension?

There can be multiple causes why you have problems with opening GMG files on given system. On the bright side, the most encountered issues pertaining to Global Mapper Grid Data Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Install Global Mapper software

Problems with opening and working with GMG files are most probably having to do with no proper software compatible with GMG files being present on your machine. To address this issue, go to the Global Mapper developer website, download the tool, and install it. It is that easy The full list of programs grouped by operating systems can be found above. If you want to download Global Mapper installer in the most secured manner, we suggest you visit Global Mapper Software LLC website and download from their official repositories.

Step 2. Check the version of Global Mapper and update if needed

If the problems with opening GMG files still occur even after installing Global Mapper, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Global Mapper is available. Software developers may implement support for more modern file formats in updated versions of their products. The reason that Global Mapper cannot handle files with GMG may be that the software is outdated. The latest version of Global Mapper should support all file formats that where compatible with older versions of the software.

Step 3. Assign Global Mapper to GMG files

If you have the latest version of Global Mapper installed and the problem persists, select it as the default program to be used to manage GMG on your device. The method is quite simple and varies little across operating systems.

Change the default application in Windows

• Right-click the GMG file and choose Open with option
• Click Choose another app and then select More apps option
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Global Mapper installation folder. Confirm by checking Always use this app to open GMG files box and clicking OK button.

Change the default application in Mac OS

• Right-click the GMG file and select Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select Global Mapper and click Change for all...
• Finally, a This change will be applied to all files with GMG extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the GMG for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the GMG file in question. Problems with opening the file may arise due to various reasons.

1. Check the GMG file for viruses or malware

If the file is infected, the malware that resides in the GMG file hinders attempts to open it. Scan the GMG file as well as your computer for malware or viruses. If the scanner detected that the GMG file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

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

If the GMG file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. If the GMG file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Global Mapper Grid Data Format file.

4. Make sure that the system has sufficient resources to run Global Mapper

The operating systems may note enough free resources to run the application that support GMG files. Close all running programs and try opening the GMG file.

5. Verify that your operating system and drivers are up to date

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Global Mapper Grid Data Format files. It may be the case that the GMG files work properly with updated software that addresses some system bugs.

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