Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Restore previous session before upgrade

  • 2 பதிலளிப்புகள்
  • 2 இந்த பிரச்னைகள் உள்ளது
  • 1 view
  • Last reply by Dunothar

I'm lost, I tried countless of different "solutions" on the web to restore the previous session before I updated my old Firefox. When I update from version 54 to the newest one, all my open tabs are gone, or FF opens tabs from YEARS ago. I have a full backup of the original V54 instalation including the Mozilla folders in LocalLow, Local and Roaming. So swapping files is no problem.

I badly need all the open tabs again for productivity reasons alone. I hope someone knows how to restore the previous session before the upgrade.

I'm lost, I tried countless of different "solutions" on the web to restore the previous session before I updated my old Firefox. When I update from version 54 to the newest one, all my open tabs are gone, or FF opens tabs from YEARS ago. I have a full backup of the original V54 instalation including the Mozilla folders in LocalLow, Local and Roaming. So swapping files is no problem. I badly need all the open tabs again for productivity reasons alone. I hope someone knows how to restore the previous session before the upgrade.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

Hi

With that old Firefox 54 version you probably have a uncompressed sessionstore.js file for your session data. You will have to remove the existing sessionstore.jsonlz4 file and probably also rename/remove the sessionstore-backups folder to make Firefox fallback to sessionstore.js.

Note that best is to update manually from 54 to the current release via "Help -> About Firefox" to ensure that migration code to update files to a new scheme is run as you can lose more data like the logins.

Read this answer in context 👍 1

All Replies (2)

தீர்வு தேர்ந்தெடுக்கப்பட்டது

Hi

With that old Firefox 54 version you probably have a uncompressed sessionstore.js file for your session data. You will have to remove the existing sessionstore.jsonlz4 file and probably also rename/remove the sessionstore-backups folder to make Firefox fallback to sessionstore.js.

Note that best is to update manually from 54 to the current release via "Help -> About Firefox" to ensure that migration code to update files to a new scheme is run as you can lose more data like the logins.

Hot damn, that did it! Didn't know that the filetype changed. No wonder that it didn't work before.