When trying to launch Firefox using Vista, I get a dialogue box says Firefox is already running. I have to restart the system before it will open

February 2021 1 2 Report

When trying to launch Firefox using Vista, I get a dialogue box says Firefox is already running. I have to restart the system before it will open

Computers & Internet - Mozilla - Firefox

You can kill it by using task manager brought up by CTL+ALT+DEL. You can reinstall FireFox to fix some issues with its files, settings and updates.