We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

Avatar for Username

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

This thread was archived. Jei jums reikia pagalbos, užduokite naują klausimą.

After Upgrading to new version Firefox will not open at all

  • 1 reply
  • 3 have this problem
  • 6 views
  • Paskiausią atsakymą parašė alan_r

sgwestby
sgwestby
more options

I am running Windows 7 - 64 bit version. Firefox prompted me to upgrade to the new version, which I did. It downloaded straightaway but after I installed it the programme does not appear on screen at all. This hapenned several weeks ago so I uninstalled it and went back to an earlier version. Now I cannot work out how to do this again, so I am stuck without Firefox altogether.

I am running Windows 7 - 64 bit version. Firefox prompted me to upgrade to the new version, which I did. It downloaded straightaway but after I installed it the programme does not appear on screen at all. This hapenned several weeks ago so I uninstalled it and went back to an earlier version. Now I cannot work out how to do this again, so I am stuck without Firefox altogether.

All Replies (1)

alan_r
alan_r
more options

I would be interested if you or someone else can tell me what the IEMB3 in your User Agent string is.

If you get to the stage where Fx 6 seems to be installed, try starting it in Firefox Safe Mode - hold down the Shift Key as you double click on the Firefox icon>ignore the page that opens>Continue. If the browser opens O.K. you need to do some Troubleshooting - in Default theme -

https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Modified by alan_r