I can't get Firefox to close
I cannoy uninstall or upgrade Firefox because it's still running even though I can't open it
- User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Did you try to reboot the computer?
You can also try to boot the computer in Windows Safe mode with network support to see if that has effect in case security software is causing problems.