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

How can I avoid creating a "parent.lock" file?

  • 1 reply
  • 6 have this problem
  • 10 views
  • Last reply by cor-el

more options

Each time this file is created (which is several times each day), Firefox 6.02 freezes, crashes, or continuously try to connect to a web site. Simply put- the program stops working. When I try to close Firefox - it takes 15 to 30 minutes. Task Manager will not close the program. To correct the problem I have to shutdown my XP laptop, restart it, locate the file in the Firefox Profile folder and delete it. So, what must be done to avoid creating a "parent.lock" file?

Each time this file is created (which is several times each day), Firefox 6.02 freezes, crashes, or continuously try to connect to a web site. Simply put- the program stops working. When I try to close Firefox - it takes 15 to 30 minutes. Task Manager will not close the program. To correct the problem I have to shutdown my XP laptop, restart it, locate the file in the Firefox Profile folder and delete it. So, what must be done to avoid creating a "parent.lock" file?

All Replies (1)

more options

Firefox creates that parent.lock file to indicate that a Firefox instance is using that profile to prevent other Firefox processes from using that profile..
The creation of that file shouldn't be a problem.

See "Hang at exit":