Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Firefox hangs every time I click on Options on the menu site.

more options

Windows 7 x64, Dell Latitude E6410, 8 Gb RAM. Uninstalled FF, removed all old maps and files, also in registry, ran CCleaner, restarted Computer, downloaded new FF and installed it, same problem; every time I open options on the menu site FF hangs or "locks up", and must be forced to shut down.

Windows 7 x64, Dell Latitude E6410, 8 Gb RAM. Uninstalled FF, removed all old maps and files, also in registry, ran CCleaner, restarted Computer, downloaded new FF and installed it, same problem; every time I open options on the menu site FF hangs or "locks up", and must be forced to shut down.

All Replies (4)

more options

"... every time I open options on the menu site ..."

What do you mean by "menu site"?

more options

the-edmeister said

"... every time I open options on the menu site ..." What do you mean by "menu site"?

Maybe "site" is wrong? I mean the side/site that opens when I click the little ikon with three lines on it which says "open menu" when I have the cursor over it, on the far right side of the screen, and then when I click on the options ikon FF hangs/locks up.

Edit: Oops, perhaps I've been unclear; it's when I open options in FF that FF hangs/locks up.

Modified by ola.ledning

more options

Try to start Firefox in Safe Mode to see if that works.

You can check for problems with preferences.

Delete possible user.js and numbered prefs-##.js files and rename/remove the prefs.js file to reset all prefs to the default value including prefs set via user.js and prefs that are no longer supported in current Firefox releases.

more options

cor-el: Thank you for your suggestions, but they don't help. FF hangs in safemode as in normalmode. The files user.js and pref-##.js dosen't exist on my computer. Any old values should not exist on it either, as I not only uninstalled FF, but also deleted all maps and files that have anything to do with Mozilla, and deleted everything Mozilla in the registry before I reinstalled FF with a new download. I have also checked my computer for viruses and malware with several programs.