Join us and the lead editor of IRL, Mozilla's multi-award-winning podcast, for a behind-the-scenes look at the pod and to contribute your ideas for the next season, themed: "AI and ME." Mark your calendar and join our Community Call on Wednesday, Aug 7, 17:00–17:45 UTC. See you there!

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

My Firefox seems stuck. Everything was working fine and now I have no bookmarks or history. I have restarted and contacted Apple and no one can help. Do I need to reinstall?

more options

The message I receive is "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. I tried restarting and renaming the file but that file already existed. There are no add ons when I open the manage add ons extensions. Please help. I am a Mac user.

The message I receive is "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. I tried restarting and renaming the file but that file already existed. There are no add ons when I open the manage add ons extensions. Please help. I am a Mac user.

All Replies (1)

more options

Why are you not using latest firefox 7?