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Clicked new session by accident, need to restore previous tabs

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  • Last reply by cor-el

potuf
potuf
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I've tried the firefox session history scrounger, and only managed to find an upgrade.jsonlz file that goes back to 3/27. The latest one is the new session I opened today by accident. Is there any way to look through all iterations of previous sessions?

I've tried the firefox session history scrounger, and only managed to find an upgrade.jsonlz file that goes back to 3/27. The latest one is the new session I opened today by accident. Is there any way to look through all iterations of previous sessions?

All Replies (2)

FredMcD
FredMcD
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Don't delete the files if you need to rescue any data from them, just move them out of the profile folder to some location where Firefox doesn't look for them. You can try to read out their contents using this tool: https://www.jeffersonscher.com/res/scrounger.html

cor-el
cor-el
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  • Top 10 Contributor
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Backup the session files in the sessionstore-backups folder in the Firefox Profile Folder to make sure not to lose possible important session data. Do NOT close Firefox when Firefox is already running.

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 (make sure to backup the current sessionstore.jsonlz4).