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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Undo close tab doesn't work

  • 6 uphendule
  • 1 inale nkinga
  • Igcine ukuphendulwa ngu rgr81_

more options

Hi guys, I have a problem with firefox. The option to undo close tab (whether its the shortcut, or the right click on tabs menu) doesn't work correctly for me, it always open a randomly closed page from a while ago and not the recently closed one.

I thought it was a problem with how I close the tabs (ie. if i click on the x or ctrl+w, or the mouse wheel) but it doesn't make a difference, the undo closed tab still doesn't work right.

I tried looking for a solution on here and online but found nothing concrete. So, I appreciate any help.

All Replies (6)

more options

Does Session Restore otherwise work properly ?

You can check for problems with the sessionstore.jsonlz4 file in the Firefox profile folder that stores session data.

  • delete sessionstore.jsonlz4 and sessionstore.js

When sessionstore.jsonlz4 is deleted you lose pinned tabs and open tabs and you will have to recreate them, so if necessary make a note or bookmark them. sessionstore.jsonlz4 is only present in the Firefox profile folder when Firefox is closed.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

more options

Hi seeingolive, you might also look at the menu and see whether you can spot a pattern of certain kinds of tabs not being added to it when they're closed. Either:

  • "3-bar" menu button > Library > History > Recently Closed Tabs (current window only)
  • "Library" toolbar button > History > Recently Closed Tabs (current window only)
  • (menu bar) History > Recently Closed Tabs (current window only)
more options

@cor-el: session restore works properly, before I tried your solution I tried @jscher2000's.

@jscher2000, somehow opening the recently closed tabs menu makes everything function as it should be?

Thank you for your help everyone. :)

more options

Perhaps I should start a new thread, but this seems related.

macOS Mojave, Firefox 78.0.1 -- if I close a tab with a keyboard shortcut (command-W) and wish I had not, my muscle memory immediately does an undo (shift-command-Z) but doesn't work. I just tested and if I close a tab with command-W, the Edit menu shows undo as grayed out. No problem finding the closed tab in History --> Recently Closed Tabs....

more options

@ Bill Costa

Note that the command to reopen a closed tab is "Command+Shift+T" in the en-US version and I think this is the same in other locales in case "Command+Shift+Z" is not a typo.

more options

Hello, I think I have a similar problem. Some weeks back I've seen that when I close a tab, and do right click over any tab, and then click Undo close tab, it reopens 3 or 5 (including the last one) tabs. Before, I remember that always it used to open only the last one. I do not know when it started doing this, but sometimes when I close many tabs in a row, and I only want to reopen last one, opens all the bunch.