GMC File Extension

What is GMC file?

GMC is a file extension commonly associated with Global Mapper Catalog files. Global Mapper Catalog format was developed by Global Mapper Software LLC. GMC file format is compatible with software that can be installed on Windows system platform. GMC file format, along with 255 other file formats, belongs to the GIS Files category. The software recommended for managing GMC files is Global Mapper. On the official website of Global Mapper Software LLC developer not only will you find detailed information about theGlobal Mapper software, but also about GMC and other supported file formats.

Programs which support GMC file extension

Programs that can handle GMC files are as follows. GMC files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

How to open file with GMC extension?

There can be multiple causes why you have problems with opening GMC files on given system. What is important, all common issues related to files with GMC extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The list below will guide you through the process of addressing the encountered problem.

Step 1. Get the Global Mapper

The main and most frequent cause precluding users form opening GMC files is that no program that can handle GMC files is installed on user’s system. The solution to this problem is very simple. Download Global Mapper and install it on your device. 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

You still cannot access GMC files although Global Mapper 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. If you have an older version of Global Mapper installed, it may not support GMC format. The most recent version of Global Mapper is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate Global Mapper Catalog files with Global Mapper

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 GMC on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

The procedure to change the default program in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the GMC file
• Select Choose another app → More apps
• 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 GMC files box and clicking OK button.

The procedure to change the default program in Mac OS

• Right-click the GMC file and select Information
• Open the Open with section by clicking its name
• From the list choose the appropriate program and confirm by clicking Change for all....
• If you followed the previous steps a message should appear: This change will be applied to all files with GMC extension. Next, click the Continue button to finalize the process.

Step 4. Check the GMC for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper GMC file. Problems with opening the file may arise due to various reasons.

1. Verify that the GMC in question is not infected with a computer virus

Should it happed that the GMC is infected with a virus, this may be that cause that prevents you from accessing it. Scan the GMC file as well as your computer for malware or viruses. If the GMC file is indeed infected follow the instructions below.

2. Verify that the GMC file’s structure is intact

If the GMC file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with GMC extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Switch to an account that has required privileges and try opening the Global Mapper Catalog file again.

4. Verify that your device fulfills the requirements to be able to open Global Mapper

If the system is under havy load, it may not be able to handle the program that you use to open files with GMC extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

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

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