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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Not previous session restored

  • 1 èsì
  • 1 ní ìṣòro yìí
  • 6 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ cor-el

la.sardegna2011
la.sardegna2011
more options

On start-up Firefox restores (or opens) the last session before I closed Firefox. Or so it is configured. However, since -at least- a month Firefox seems to open the session that it opened the last time and not the session before turning the browser off. I threw out a lot of tabs and rearranged them, but on the next startup everything is exactly as it was before I changed things. This is very frustrating. Why is Firefox not opening the last session that was open (and how it is configured), but a previous one?

On start-up Firefox restores (or opens) the last session before I closed Firefox. Or so it is configured. However, since -at least- a month Firefox seems to open the session that it opened the last time and not the session before turning the browser off. I threw out a lot of tabs and rearranged them, but on the next startup everything is exactly as it was before I changed things. This is very frustrating. Why is Firefox not opening the last session that was open (and how it is configured), but a previous one?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Use one of these to close Firefox if you are currently doing that by clicking the close X on the Firefox Title bar.

  • "3-bar" menu button -> Exit (Power button)
  • Windows: File -> Exit
  • Mac: Firefox -> Quit Firefox
  • Linux: File -> Quit

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.