Call +1-800-795-0713 to Fix AVG Installation Failed General Error Code 0x0643 AVG Antivirus error 0x0643 generally occurs at the time of installing the software. And users need to fix this error immediately because it can affect your system. You can take help with AVG Customer Service Number to fix the AVG Installation Failed General Error 0x0643 either fix this on your end just by following some easy steps. Causes Of AVG Error Code 0x0643: The causes of this error code are active window crashes every time, the PC frequently crashes, a missing setup content file, Windows responds really slow and sluggishly or reboots automatically and the Computer System frequently “freezes”. Solution 1:- Clean Out Previous Antivirus Software Program First of all remove Internet Security Software from your system if any, because tons of registry items don’t allow to access new Antivirus software properly. Solution 2:- Setup and Reinstall Tune Up Tool If you are unable to remove the previous Antiviru