Tips to open GMG file

Can't open the GMG file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open GMG files as well as a list of programs that support GMG files.

GMG file extension

File Name Global Mapper Grid Data Format
File Category GIS Files

The GMG file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the GMG files. Below is a summary of the number of programs that support and open the GMG file on each system platform.

Operating systems
  • 1
  • 0
  • 0
  • 0
  • 0
  • 0

What is GMG file?

The file with the extension GMG is the GIS Files file type. GIS Files consists of 255 similar files. Global Mapper Grid Data Format is most often found on 1 operating systems. The file will work on Windows systems, unfortunately not on others. It is recommended to use Global Mapper to handle this file. This is a program created by Global Mapper Software LLC.

How to open GMG file?

The main problem with Global Mapper Grid Data Format is that the GMG file is incorrectly associated with programs. Thus, when you open GMG, the program selection wizard or some other program starts. How to solve such a problem?

The first thing you should do is just "doubleclick" on the GMG file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Global Mapper

An often overlooked issue is to make sure that Global Mapper is installed on the computer. This can be achieved by typing Global Mapper into the operating system search engine. If we do not have this program, it is worth installing it, as it will help you automatically associate the file GMG with Global Mapper. Later in this article you will find a list of programs that can open GMG files.

Programs to open GMG file

Remember to download programs supporting GMG files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Global Mapper with GMG files

However, it may happen that the application itself does not cause the GMG file to open in the Global Mapper application, but you can set it manually. The association can be created using the drop-down list available by right-clicking on the file and selecting Properties. The window will show, among other things, the type of the file and the information by which the program is used to launch the file. Changes can be made using the "Change" button. The program should be visible in the window, otherwise it should be selected manually using the "Browse" button and the program installation directory should be indicated. The "always use the selected program ..." field will set the Global Mapper application as the default for handling the GMG file.

Step 3. Update Global Mapper to the latest version

If, however, after binding Global Mapper with Global Mapper Grid Data Format there were still problems, you should update the program to the latest version. This can be done using the application (if it provides such options) or from the Global Mapper Software LLC website and install the latest version.

Step 4. Check for the following problems with the GMG file

If the above steps do not help, you can assume that the file itself is not correct. File problems can be divided into the following:

The affected file may be 0 KB or smaller than expected. Usually this applies to GMG files downloaded from the Internet in case the download did not finish properly. The only repair option is to download the file again.
The computer may have fallen victim to a computer virus or hacker. A virus scan using an up-to-date antivirus program should fix the problem. Alternatively, you can use the scanners available online. For the best results, we will scan the entire operating system, not just our GMG file. As a result of the scan, sometimes it is not possible to recover GMG files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
This can happen especially when the program is dynamically developed and the structure of the GMG files changes over time. On their websites, developers usually offer free solutions to such problems, e.g. in the form of a conversion program or an older version of the program.
There can be many reasons for the failure. Repairing is very dependent on the file type. Some programs offer the option of recovering data from damaged GMG files. The easiest way to restore the file is from a backup or by contacting , but this one can be expensive. Not all damage can be reversed.
The program indicates that the file is encrypted or corrupted. The encrypted file GMG except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. The problem is only writing to the file, not reading it. Copying the GMG file to another location will fix the problem.
This can happen on a file that does not support multiple access. You may find that another program you are using is preventing you from working with the file. Closing other programs should help. Sometimes it is necessary to wait a while before referencing the GMG file again. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If nothing helps, please reset the device.