This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

A copy of Firefox is already open. Only one copy of Firefox can be open at a time.

  • 1 tontu
  • 32 am na jafe-jafe bii
  • 2 views
  • i mujjee tontu mooy cor-el

more options

I am not able to find the open Firefox on my Desk Top running MAC OS X (10.7.5). On a 2.7 Ghz Intel Core i5

How do I clear this issue in simple terms. Tried following other post but nothing works.

I am not able to find the open Firefox on my Desk Top running MAC OS X (10.7.5). On a 2.7 Ghz Intel Core i5 How do I clear this issue in simple terms. Tried following other post but nothing works.

All Replies (1)

more options

See:

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.