Why does Firefox no longer run for me under Linux?

If you are having issues opening Firefox on a Linux computer, it may be due to a lock file in your Mozilla profile. This is especially relevant if you receive an error message similar to "Firefox is already running, but is not responding." This type of error can occur if Firefox is closed improperly or crashes, so the lock file remains, making Firefox think it's already running.

To fix this issue, you can remove the file from the .mozilla folder in your AFS home directory. The file is typically located at a path similar to:


For a further description of this issue, refer to the Mozilla Support article.


Article ID: 6726
Wed 11/10/21 1:58 PM
Mon 11/15/21 1:56 PM