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 the session with sessionstore and upgrade.json

  • 3 replies
  • 0 have this problem
  • 547 views
  • Last reply by cor-el

more options

I lost my old session and while attempting to fix the issue I overwrote my sessionstore.json backups in the process. Now all i have are the upgrade.jsonlz4 files, i know those are old session backups from when we upgraded. how do i go about restoring those as a session? when i follow the typical session restore steps nothing happens seemingly because its a jsonlz4 - XXXXXX file.

Any way to change it to a normal jsonlz4 file?

I lost my old session and while attempting to fix the issue I overwrote my sessionstore.json backups in the process. Now all i have are the upgrade.jsonlz4 files, i know those are old session backups from when we upgraded. how do i go about restoring those as a session? when i follow the typical session restore steps nothing happens seemingly because its a jsonlz4 - XXXXXX file. Any way to change it to a normal jsonlz4 file?

Chosen solution

You can copy such an upgrade.jsonlz4 file to the main level in the profile and rename the file to sessionstore.jsonlz4 with Firefox closed to replace the file that Firefox creates (sessionstore.jsonlz4 is only present when Firefox is closed).

You can look at this tool to inspect a compressed jsonlz4 sessionstore file.

Read this answer in context 👍 1

All Replies (3)

more options

Chosen Solution

You can copy such an upgrade.jsonlz4 file to the main level in the profile and rename the file to sessionstore.jsonlz4 with Firefox closed to replace the file that Firefox creates (sessionstore.jsonlz4 is only present when Firefox is closed).

You can look at this tool to inspect a compressed jsonlz4 sessionstore file.

more options

cor-el said

You can copy such an upgrade.jsonlz4 file to the main level in the profile and rename the file to sessionstore.jsonlz4 with Firefox closed to replace the file that Firefox creates (sessionstore.jsonlz4 is only present when Firefox is closed). You can look at this tool to inspect a compressed jsonlz4 sessionstore file.

Unfortunately when i copy over the upgrade.jsonlz4 it seems to not recognize it as a session.

I was able to use the scrounger program to export all the urls and then just manually add back the ones i had lost. Thank you for recommending the scrounger.

more options

You did copy the file to the main level in the profile folder and renamed the file to sessionstore.jsonlz4. Was there a sessionstore.jsonlz4 present in the profile folder, so you could replace it with the upgrade file ?