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 won't start after updating. How to restore the previous version without losing profile data?

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by zeroknight

more options

Firefox won't start after updating to version 123.0 on Ubuntu OS.

At the same time, no errors will appear, and there is also no specific crash report that would help understand the reason.

How to restore the previous version without losing profile data?

Firefox won't start after updating to version 123.0 on Ubuntu OS. At the same time, no errors will appear, and there is also no specific crash report that would help understand the reason. How to restore the previous version without losing profile data?

All Replies (1)

more options

Can you get the flatpak version to start?