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.

ابحث في الدعم

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

Session Restore

  • 1 (رد واحد)
  • 1 has this problem
  • 1 view
  • آخر ردّ كتبه cor-el

more options

What files do I need to restore from my nightly backup to bring back the multiple tabs I have lost in a shut down? The current restore previous session only has half of what I lost. I tried copying the profiles folder from a back up but it still only had three of the six windows I lost. Suggestions please!

What files do I need to restore from my nightly backup to bring back the multiple tabs I have lost in a shut down? The current restore previous session only has half of what I lost. I tried copying the profiles folder from a back up but it still only had three of the six windows I lost. Suggestions please!

All Replies (1)

more options

That is about sessionstore.jsonlz4 in the profile folder and possibly the recovery files in the sessionstore-backups folder.

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.

You will normally find these files in the sessionstore-backups folder:

  • previous.jsonlz4 (cleanBackup: copy of sessionstore.jsonlz4 from previous session that was loaded successfully)
  • recovery.jsonlz4 (latest version of sessionstore.jsonlz4 written during runtime)
  • recovery.baklz4 (previous version of sessionstore.jsonlz4 written during runtime)
  • upgrade.jsonlz4-<build_id> (backup created during an upgrade of Firefox)

You can copy a file from the sessionstore-backups folder to the main profile and rename the file to sessionstore.jsonlz4 to replace the current file with Firefox closed (make sure to backup the current sessionstore.jsonlz4).