Most often it is disinfection or deletion of an infected file. In this case, scan the GSC file and take the actions recommended by the antivirus program installed on the system.
You should then find out what is the reason of the problem. Sometimes it happens that despite having the right application and the correct configuration, there are still problems with opening the GSC files. Check out other possible problems related to GSC files. Remember! Manually editing the system registry is only recommended for advanced users, and changes made to it without proper knowledge may result in damage to the system. Finally, select the 'Always use the selected program to open GSC files' option and confirm the whole operation.Click 'Find more applications on this PC' and indicate the installation location of the appropriate program.Right click on the unknown GSC file you want to open.
The second way is simpler and definitely recommended for less advanced users. This can be done in two ways - one is to manually edit the Windows Registry and HKEY_CLASSES_ROOT keys. If the user already has one of the applications installed, the next step will be to associate it with the file extension GSC. Associate Call of Duty with the GSC file extension