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!

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 4 won't run on my pc. Had 3.6 no prob. How to get 3.6 back

  • 1 resposta
  • 5 have this problem
  • 2 views
  • Last reply by Xircal

more options

I have upgraded to 4 but it just shows tool bar and blank page and will not open any bookmarks. I had no problem with 3.6 and want that version back.

I have upgraded to 4 but it just shows tool bar and blank page and will not open any bookmarks. I had no problem with 3.6 and want that version back.

All Replies (1)

more options

Sorry to hear about your problem.

  • Then go to Add/Remove Programs, scroll down to Mozilla Firefox and remove it, choosing to keep your bookmarks, customizations etc., (don't checkmark the box).
  • Then reboot and delete the folder called Mozilla Firefox at this location: C:\Program Files\Mozilla Firefox
  • Finally run the installation file you downloaded.