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Restore a previous session

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  • 1 has this problem
  • Last reply by FredMcD

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I HAVE SYSTEM RESTORE ON MY FIREFOX. When I purposely restarted my computer, for an unknown reason, a session came up but my previous session did not automatically restore as usually it does. I did something in that window and was thinking about something else and deleted it, ie: the session. OH S _ _ _! Just lost my restore previous session opportunity..... I opened another session (and restore previous session was grayed - not available) and have not closed my session nor re-started since. Is there any other way to go back and recover my lost session windows and tabs? .... not from the previous session that I accidentally closed, but from the session before that? Thanks in advance. George

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You may have corrupt sessionstore [v56] sessionstore.jsonlz4 file(s). Delete all sessionstore* files and the sessionstore-backups folder.

Type about:support<enter> in the address bar.

Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.

Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder

Linux: Under the page logo on the left side, you will see Application Basics. Under this find Profile Directory. To its right press the button Open Directory.

Locate the above file. Then rename or delete it. Restart Firefox.

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: