If your antivirus software isn't working, your system is no longer protected from the virus and other potential malware. Hence, it is necessary to troubleshoot AVG antivirus before moving to download a file or program on your computer.
Along with the antivirus software, certain programs may conflict with the system and prevent your software from working correctly. To resolve this issue, you will have to visit the official website of AVG to check for the updated version of the conflicting programs. Otherwise, if you notice a program on your PC that is interfering with the AVG software, remove this program with the help of its uninstaller.