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 has deleted all my extension data/settings after update

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by WestEnd

more options

I just installed the latest Firefox update (67) and when the browser restarted I noticed no web pages were loading. It turned out this was because my uBlock Origin and uMatrix extensions had been completely cleared of ALL data, including their default/pre-defined rules.

All of my extensions data seems to have been cleared. The extensions are still installed, but their settings/data are completely gone.

This is EXTREMELY frustrating.

Does Firefox make backups or anything before it attempts an update? Is my extension data/settings recoverable somehow?

Come on, Mozilla, what are you doing to Firefox recently?!

I just installed the latest Firefox update (67) and when the browser restarted I noticed no web pages were loading. It turned out this was because my uBlock Origin and uMatrix extensions had been completely cleared of ALL data, including their default/pre-defined rules. All of my extensions data seems to have been cleared. The extensions are still installed, but their settings/data are completely gone. This is EXTREMELY frustrating. Does Firefox make backups or anything before it attempts an update? Is my extension data/settings recoverable somehow? Come on, Mozilla, what are you doing to Firefox recently?!

All Replies (1)

more options

Did you check to see if they were compatible with the latest firefox version? I don't recall my updates doing that to my extensions if this was there my updates from FF57+ with the same 4 extensions would be cleared as well but they are still running and working. Besides the snafu with the addon verification in ff64 that was a bug but later updates works fine with the addons.