The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

1. Go to Firefox > Help > Troubleshooting Information.
2. Click the "Reset Firefox" button.
3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
4. Firefox will open with all factory defaults applied.

Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Grateful thanks. Job done. Now works perfectly. Just got to know what you're doing really. I've been trying now for over a week. You clearly do know what you're doing as your solution fixed the problem in about 60 seconds or less. Thanks again.

See also:

• https://support.mozilla.org/kb/Menu+bar+is+missing
• https://support.mozilla.org/kb/how-do-i-get-firefox-button
• https://support.mozilla.org/kb/why-are-tabs-top