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. Please ask a new question if you need help.

facebook button on my toolbar disappeared, won't install

  • 1 reply
  • 1 has this problem
  • 14 views
  • Last reply by FredMcD

cassk2628
cassk2628
more options

The facebook icon has disappeared from my menu. I tried to reinstall it, won't work.

The facebook icon has disappeared from my menu. I tried to reinstall it, won't work.

All Replies (1)

FredMcD
FredMcD
more options

This will disable add-on signature enforcement; Enter about:config into your Firefox address bar Click the I'll be careful button Find xpinstall.signatures.required in the list Right click the preference Select Toggle until the value is false https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox

https://wiki.mozilla.org/Firefox/AddOns/Status/Updates#Exec_Summary “Currently targeting Signing with no pref to turn off in Firefox 47”