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

Undoing 'Recently Closed Tabs' no longer available - please help!

  • 5 svar
  • 1 har dette problemet
  • 6 views
  • Siste svar av Hasan

more options

I find myself unable to access the 'undo closed tab' option, which I have previously found so useful. When I go to History > Recently Closed Tabs, the Recent Closed Tabs entries are greyed-out. How can I reactivate this essential functionality please?

I find myself unable to access the 'undo closed tab' option, which I have previously found so useful. When I go to History > Recently Closed Tabs, the Recent Closed Tabs entries are greyed-out. How can I reactivate this essential functionality please?

Endret av Pipps

Valgt løsning

-> Tap ALT key or press F10 to show the Menu Bar

-> go to Help Menu -> select Restart with Add-ons Disabled

Firefox will close then it will open up with just basic Firefox. Now do this:

-> Update Firefox to the latest version by going to Help Menu -> About Firefox -> click Check for Updates -> if an updated version is found then download the latest version and install it. After that follow these steps:

-> go to View Menu -> Toolbars -> unselect All Unwanted toolbars

-> click the Favicon on SearchBar -> click Manage Search Engines -> select all Unwanted Search Engines and click Remove -> click OK

-> go to Tools Menu -> Add-ons -> Extensions section -> REMOVE All Unwanted/Suspicious Extensions (Add-ons) -> Restart Firefox

You can enable your Known & Trustworthy Add-ons later. Check and tell if its working.

Les dette svaret i sammenhengen 👍 0

All Replies (5)

more options

Make sure that you do not run Firefox in permanent Private Browsing mode.

  • https://support.mozilla.com/kb/Private+Browsing
  • You enter Private Browsing mode if you select: Tools > Options > Privacy > History: Firefox will: "Never Remember History"
  • To see all History and Cookie settings, choose: Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
  • Deselect: [ ] "Permanent Private Browsing mode"
more options

Thanks for your reply. I can confirm that Permanent Private Browsing mode is not selected. Firefox is set to record all history. However, the 'Undo Closed Tabs' options are still greyed-out in the history menu. What could be the reason for this? How can I change it?

more options

Valgt løsning

-> Tap ALT key or press F10 to show the Menu Bar

-> go to Help Menu -> select Restart with Add-ons Disabled

Firefox will close then it will open up with just basic Firefox. Now do this:

-> Update Firefox to the latest version by going to Help Menu -> About Firefox -> click Check for Updates -> if an updated version is found then download the latest version and install it. After that follow these steps:

-> go to View Menu -> Toolbars -> unselect All Unwanted toolbars

-> click the Favicon on SearchBar -> click Manage Search Engines -> select all Unwanted Search Engines and click Remove -> click OK

-> go to Tools Menu -> Add-ons -> Extensions section -> REMOVE All Unwanted/Suspicious Extensions (Add-ons) -> Restart Firefox

You can enable your Known & Trustworthy Add-ons later. Check and tell if its working.

Endret av Hasan

more options

I disabled a number of Add-ons. I found that it was one in particular which had been somehow prevented reopening closed tabs. It's called Split Browser. A useful Add-on, but one which it seems I will now have to disable. Thank you for you helping me diagnose the problem. Your help is much appreciated.

more options

To help other users find solutions, please return to this Thread and Sign-in to the

forum with your Username and Password:

click on "Solved It" next to the reply ABOVE that BEST solved your question

DO NOT click "Solved It" next to this reply