Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

What to do when I can't restore last session?

  • 2 replies
  • 6 have this problem
  • 33 views
  • Last reply by naal

more options

Hi, For some reason firefox didn't restore last session's tabs. And restore session tab opened it was blank! No last session details, no restore last session bottom. Nothimg... :( I tried to restore it from history/import and backup, Got a message that it will close al my open tabs, clicked yes, only to see nothing happens. Tried to restore through mozila default home page, but where the restore last session bottom should be there's nothing... What to do? I can't lose my last session's tabs!!!

Hi, For some reason firefox didn't restore last session's tabs. And restore session tab opened it was blank! No last session details, no restore last session bottom. Nothimg... :( I tried to restore it from history/import and backup, Got a message that it will close al my open tabs, clicked yes, only to see nothing happens. Tried to restore through mozila default home page, but where the restore last session bottom should be there's nothing... What to do? I can't lose my last session's tabs!!!

All Replies (2)

more options

In case you are using "Clear history when Firefox closes":

  • do not clear the Browsing History

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.

You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data.

  • Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

Note that deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).


There are other things that need your attention.

Your System Details List shows multiple Flash plugins.

  • Shockwave Flash 13.0 r0
  • Shockwave Flash 11.8 r800
  • Shockwave Flash 9.0 r28

You can find the installation path of all plugins on the about:plugins page.

You can check the Flash player installation folder for multiple Flash player plugins and remove older version(s) of the plugin (NPSWF32) and possibly (re)install the latest Flash player.

  • (32 bit Windows) C:\Windows\System32\Macromed\Flash\
  • (64 bit Windows) C:\Windows\SysWOW64\Macromed\Flash\
more options

Hi cor-el, my settings are on remember browsing history. Any other ways to restore the last session? Thanks