Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

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

undo close tab feature is not working

more options

yes i tried it in safe mode and it works, but when add ons enabled the undo close tab feature does not work!

yes i tried it in safe mode and it works, but when add ons enabled the undo close tab feature does not work!

All Replies (2)

more options

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.

  • Use "Disable all add-ons" on the Safe mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

more options

If it works in Firefox Safe Mode, then the problem is being caused by one of your Add-ons. You will need determine which Add-on is causing the problem. Read the following articles:


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.