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

Trying to Roll Back Firefox without success?

  • 4 replies
  • 1 has this problem
  • 3 views
  • Last reply by 60012334

more options

I am rolling back Firefox to V65 in the hope that I will be able to re-integrate my Kaspersky Security, Download Manager etc addons I have re-installed V65 but as soon as I run it it does an immediate update to V66? I configured no update in settings but this does not help Any advise would be most appreciated as I do not wish to change browser if I can help it Many Thanks TW

I am rolling back Firefox to V65 in the hope that I will be able to re-integrate my Kaspersky Security, Download Manager etc addons I have re-installed V65 but as soon as I run it it does an immediate update to V66? I configured no update in settings but this does not help Any advise would be most appreciated as I do not wish to change browser if I can help it Many Thanks TW

All Replies (4)

more options

The addons issue is caused by a certificate problem, Mozilla is tracking the bug here: https://bugzilla.mozilla.org/show_bug.cgi?id=1548973. Rolling back won't solve the problem right now, and after the fix, you won't need a rollback.

more options

Thank you for your reply I did see the note on Mozilla concerning the certificate error and wondered if this was the issue Unfortunately I do not have the luxury of time because I am wishing to use a business machine and I have tasks to be undertaken immediately If rolling back will not solve the problem then I guess I will have to use another browser, which is a great shame as I always enjoyed Firefox Probably try Opera rather than Edge or Chrome Thank you for your reply, at least I know where I stand Regards TW

more options

switching back to an older version won't help, as the issue is caused by an expired certificate. mozilla is already rolling out a hotfix, which should reach affected installations in the coming hours...

Modified by philipp

more options

Hi phillip, thanks for your reply, I got that from the first response so had to move on and already switched over to Edge (and currently struggling to find where it keeps everything!)

Probably try Firefox again in the future

Thanks for your help though, much appreciated Regards TW