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

Restoring previous session after closing firefox.

  • 2 odgovori
  • 0 ima ovaj problem
  • 3 views
  • Posljednji odgovor poslao cor-el

more options

My computer needed to be updated so I click on update without closing any programs because the computer usually does it. At this time I was in the School Library well the update was completed so I open up Firefox usually when i open firefox after a shutdown or some other reason. I can go to Open Application Menu>History>RestorePreviousSession but before I clicked on Restore Previous Session I realize that I need to go to class, so I closed my computer. once in class I open my computer up and I try to restore my previous session but by the time that I tried to restore it my session was deleted and my question is if anyone at FIREFOX can help restore that deleted session because I was working on my research project which is due this week, and in that particular session I had tabs open that I need so i can finish my project. Please reach out as soon as possible. This happen on Tuesday. Thank You

My computer needed to be updated so I click on update without closing any programs because the computer usually does it. At this time I was in the School Library well the update was completed so I open up Firefox usually when i open firefox after a shutdown or some other reason. I can go to Open Application Menu>History>RestorePreviousSession but before I clicked on Restore Previous Session I realize that I need to go to class, so I closed my computer. once in class I open my computer up and I try to restore my previous session but by the time that I tried to restore it my session was deleted and my question is if anyone at FIREFOX can help restore that deleted session because I was working on my research project which is due this week, and in that particular session I had tabs open that I need so i can finish my project. Please reach out as soon as possible. This happen on Tuesday. Thank You

All Replies (2)

more options

It's my computer.

more options

The only way to restore a lost session is via an upgrade.jsonlz4 in the sessionstore-backups folder or by browsing a Windows System Restore point to see if you can locate an older copy on sessionstore.jsonlz4.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).

You will normally find these files in the sessionstore-backups folder:

  • previous.jsonlz4 (cleanBackup: copy of sessionstore.jsonlz4 from previous session that was loaded successfully)
  • recovery.jsonlz4 (latest version of sessionstore.jsonlz4 written during runtime)
  • recovery.baklz4 (previous version of sessionstore.jsonlz4 written during runtime)
  • upgrade.jsonlz4-<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.jsonlz4 to replace the current file with Firefox closed.

  • make sure to backup the current sessionstore.jsonlz4

You can look at this tool to inspect a compressed jsonlz4 sessionstore file. This tool works locally, no uploading done.

You can look at a utility to browse System Restore points.