Christopher, Have a look @ this recently released AVG article (http://avgclick.me/InstallIsRunning).
AVG Guru
I have recently selected AVG Antivirus for my laptop with Windows 10 installed .
I have had a problem … it says computer update required . So I press update …and it fails .
Message comes up saying… AVG has detected an installation running … complete installation and try again .
I have rebooted my laptop and get the same message , I dont have any installation running as far as I am aware . I then decided to uninstall AVG Free and reinstall, but that failed ???
Christopher, Have a look @ this recently released AVG article (http://avgclick.me/InstallIsRunning).
AVG Guru