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

Where is the previous session file in Firefox Quantum? Information on Firefox forum seems outdated about location and filename of previous session.

  • 1 பதிலளி
  • 22 இந்த பிரச்னைகள் உள்ளது
  • 1 view
  • Last reply by user1929

Hi, I updated to Quantum (actually Firefox did it on its own), and since then the addon "session-manager" is no longer working.

Until now I have been able to deal with the situation by always restoring the old session, until Firefox updated and by some unlucky chance it exited before I could restore my session.

When I restored, it was only an empty session. I already identified the file I want to restore, which is in the \sessionstore-backups\ , and its name is upgrade.jsonlz4-20171128222554 , about 800 KB, and contains all the tabs I want.

How do I rename the file and where should I copy it so that when I hit "restore previous session" it loads THAT FILE instead. I have tried renaming it to previous.js or restore.js, and copying it into the main directory, but it doesn't load it. The information I found on the Firefox forum seems outdated since I could not find the filenames they are talking about and I suspect this is due to the new version of Firefox, Quantum.

Thank you in advance, regards,

P. J. L.

Hi, I updated to Quantum (actually Firefox did it on its own), and since then the addon "session-manager" is no longer working. Until now I have been able to deal with the situation by always restoring the old session, until Firefox updated and by some unlucky chance it exited before I could restore my session. When I restored, it was only an empty session. I already identified the file I want to restore, which is in the \sessionstore-backups\ , and its name is upgrade.jsonlz4-20171128222554 , about 800 KB, and contains all the tabs I want. How do I rename the file and where should I copy it so that when I hit "restore previous session" it loads THAT FILE instead. I have tried renaming it to previous.js or restore.js, and copying it into the main directory, but it doesn't load it. The information I found on the Firefox forum seems outdated since I could not find the filenames they are talking about and I suspect this is due to the new version of Firefox, Quantum. Thank you in advance, regards, P. J. L.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

It looks like the correct filename for Firefox 56+ is sessionstore.jsonlz4 (based on https://hg.mozilla.org/mozilla-central/rev/733cfc278628#l1.12 ). This file should be located in the main directory of your profile.

(Before doing this, it's a good idea to make a backup of your profile folder in case something goes wrong).

Read this answer in context 👍 3

All Replies (1)

தீர்வு தேர்ந்தெடுக்கப்பட்டது

It looks like the correct filename for Firefox 56+ is sessionstore.jsonlz4 (based on https://hg.mozilla.org/mozilla-central/rev/733cfc278628#l1.12 ). This file should be located in the main directory of your profile.

(Before doing this, it's a good idea to make a backup of your profile folder in case something goes wrong).