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

in preferences, the option to open all tabs from previous session does NOT work..i've tried many ways...is this a permanent glitch?

  • 2 replies
  • 1 has this problem
  • 9 views
  • Last reply by cor-el

more options

in preferences, the option to open all tabs from previous session does NOT work..i've tried many ways...is this a permanent glitch?

in preferences, the option to open all tabs from previous session does NOT work..i've tried many ways...is this a permanent glitch?

All Replies (2)

more options

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: https://www.jeffersonscher.com/res/scrounger.html

more options

In case you use "Clear history when Firefox closes".

  • do not clear the Browsing History
  • clearing "Site Preferences" clears exceptions for cookies, images, pop-up windows, and software installation and exceptions for passwords and other website specific data
  • clearing "Cookies" will remove all selected cookies including cookies with an allow exception you may want to keep