Firefox is a popular web surfing app.
But this doesnt mean that you will not encounter issues when using it.
Firefox is already running but froze up is just an annoying issue.
You want to open it but it doesnt show on the screen.
How to get rid of this problem?MiniTool Softwarewill show you some effective solutions.
Firefox keeps your bookmarks, personal configs, and other information on your Firefox profile.
It needs an unlocked profile for normal running.
Related recommendation:Firefox Wont Open?
Try These Methods to Fix It
What to Do If Firefox Is Already Running?
These running processes are the causes of Firefox is already running.
Fix 2: power cycle your machine
you might also directlyrestart your computerto solve the problem.
This can make your rig run under a clean environment and end all invisible Firefox processes.
Why rebooting a computer fixes problems?
But this can be the cause of Firefox is already running but is ignoring you.
If not, you will be unable to open Firefox as usual.
This post is helpful:Profile Manager Create, remove, or switch Firefox profiles.
