Profile in use: Difference between revisions

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Revision as of 21:33, 8 March 2006

Background

When Firefox, Thunderbird, or Mozilla Suite is in use, it locks the active profile to keep other programs from altering the contents or causing conflicts. This lock is normally transparent to the user, but sometimes the profile remains locked when it's not expected.

In Mozilla Suite and earlier Firefox and Thunderbird versions, you may launch the application, see the Profile Manager and receive a message that your profile is already "in use". In Firefox 1.5 or Thunderbird 1.5 a dialog box may appear telling you that the application is already running but is not responding and that you should close the existing process or restart your system. In both cases, it means that the profile is locked.

How to return to your original profile

If you experienced this problem and created a new profile, thereby causing all your bookmarks and settings to disappear, you can use the Profile Manager to return to your original profile. If your original profile is still locked, try the solutions below.

How to unlock your profile

In most cases, a locked profile occurs because the application failed to shut down completely the last time it was used and the task or process is still "running in the background", even though there are no open application windows. Ending the running process is normally sufficient to unlock the profile. If the profile remains locked, try these other solutions.

Close all open processes

Go through your task or process list to see if multiple instances of Firefox, Thunderbird or Mozilla Suite are still running or not responding. End each instance found, or restart the system.

Remove the profile lock file

The application may have shut down abnormally, leaving the lock in place. To fix this, open the profile folder and delete the file,

  • "parent.lock" (Windows),
  • "lock" and ".parentlock" (Linux), or
  • ".parentlock" (Mac OS X)

In OS X you need to use a free utility like Onyx or Maintain to turn on visibility for invisible files to show ".parentlock". This file contains no information, and deleting it will unlock the profile.

Check the profile folder name and location

If Firefox or Thunderbird cannot find the profile folder it will report that the profile is in use or, in 1.5 or later versions, you will receive the message, "(Firefox or Thunderbird) is already running, but is not responding. To open a new window, you must first close the existing (Firefox or Thunderbird) process, or restart your system." This may occur if you run the application from removable media, if the profile is stored on a network drive or if you manually deleted, renamed or moved the profile folder (bug 278860). The information stored inside the "profiles.ini" file (located up a few levels in the folder hierarchy from your profile folder) is used to find the profile folder. You can open the "profiles.ini" file in a text editor such as Notepad to see what information it contains. Note: IsRelative=0 refers to a custom profile location, for example, Path=D:\Mozilla\Firefox\Profiles\myprofile. IsRelative=1 refers to a relative path in the expected profile location, for example, Path=Profiles/default.xyz. Either edit the "profiles.ini" file to show the changed profile folder location or restore the profile folder to it's original name and location.

Check access rights

This problem can also occur if you don't have the rights to edit the files in the profile (or create the lock file in the first place). Please note that this can happen if you try to use a profile from a filesystem mounted with read-only (e.g. a remote Windows share which doesn't have "allow network users to change my files" checked). This can be pretty tricky to diagnose because there is no lock file in the profile, yet the same message appears (profile in use). Incidentally, Linux users may have ~/.thunderbird and/or ~/.mozilla-thunderbird in their home directories if they have had more than one version of Thunderbird installed.

Check for other applications using the profile

Netscape 7 or another Mozilla-based program may be using the profile. Try shutting down this program to unlock the profile. Additionally, you should create separate profiles for each different application. Especially if you use both Mozilla Suite and Netscape 7, corruption can result from sharing the same profile between two different programs. (This problem is unlikely with Firefox and Thunderbird, since they do not share profiles with other applications in the way that Mozilla Suite and Netscape 7 can share profiles.)

Restoring data from a locked profile

If you are unable to unlock the profile using the above methods, use the Profile Manager to create a new profile (if necessary) and migrate your data from the locked to the new profile.

See also