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how to fix previous session feature

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la321
la321
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When i restart my computer and open firefox backup my tabs from previous session don't appear. when i click on restore previous session it always shows my tabs from a month ago

When i restart my computer and open firefox backup my tabs from previous session don't appear. when i click on restore previous session it always shows my tabs from a month ago

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cor-el
cor-el
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  • Top 10 Contributor
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You can check for problems with the sessionstore.js file in the profile folder that stores session data. When sessionstore.js is deleted you lose App Tabs and Tab Groups and open tabs and you will have to recreate them, so if necessary make a note or bookmark them.

You can use this button to go to the current Firefox profile folder:

Firefox uses the sessionstore.js file in the profile folder to store session data, but this file is only present when Firefox is closed. The sessionstore.js file is created from recovery.js when you close Firefox and is removed and copied to previous.js when you start Firefox to make is possible to restore the session at any time.

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.js (cleanBackup: copy of sessionstore.js from previous session that was loaded successfully)
recovery.js (latest version of the sessionstore written during runtime)
recovery.bak (previous version of the sessionstore written during runtime)
upgrade.js-<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.js to replace the current file (make a backup copy of the current sessionstore.js).

See also:

la321
la321 Ìbéèrè olóhun
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I just closed firefox without restarting my computer and tabs i had open were successfully restored but if firefox freezes or when i restart my computer tabs from a month ago restore

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Did you try to delete the sessionstore.js file?

You can also try to move the files in the sessionstore-backups folder to a safe location.