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 crashes on startup - will not open at all

  • 4 replies
  • 4 have this problem
  • 1 view
  • Last reply by Tim

more options

I cannot open firefox at all; it crashes on startup. I have tried opening it holding shift, to attempt opening in safe mode. I cannot update firefox because I cannot open it.

I cannot open firefox at all; it crashes on startup. I have tried opening it holding shift, to attempt opening in safe mode. I cannot update firefox because I cannot open it.

All Replies (4)

more options

Does it run if you right click and choose Run as Administrator?

more options

No, I just re-installed it and now everything is fine :) Thank you

more options

I have this problem as well, however reinstalling it didnt help me.... Any ideas?

more options

@embacy -> Do you have any single-sign on (SSO) extensions installed? Do you have Roboform installed?