Firefox v57.0.4, is not reading older recovery.jsonlz4 or sessionstore.jsonlz4 file after accidentally deleting session backup after upgrade to v57.0.4
This morning I cleaned up some superfluent files with the CCleaner software and accidentally deleted my Firefox session back with more than 100 opened sessions. More or less simultaneously it seems that my Firefox browser updated to Firefox v57.0.4 automatically. I could recover a previous.jsonlz4 and an update.jsonlz4 file, done before I run the CCleaner. I followed the https://support.mozilla.org/de/questions/1189759 instructions but Firefox always opens with only one session and simultaneously overwrites the recovery.jsonlz4 and/or sessionstore.jsonlz4 which I replaced with the recovered .jsonlz4 file.
Is there still a solution for enabling my session backup ? Could it be that my older .jsonlz4 session backup was still created with the Firefox v57.0.3 version and can't be read now from the Firefox v57.0.4 update ?
All Replies (7)
I think it is more it got corrupted during the update. Did you contact Mozilla support how to restore the session? And what kinda session is that you referring is this tabs created in session?
It could be corrupted, but I could restore 2 session backup files and both are not working when following the instructions in the link above. I didn't contact Mozilla for restoring the sessions because there are several instruction comments in the Internet about it, also the post I mentioned above. As sessions I mean opened tabs. I had more than 100 opened simultaneously. They are stored in the sessionstore-backup folder of Firefox and the sessionstore.jsonlz4 file in the main folder.
Not sure others are better at this but have a suggestion if has not been to long since. This program can recover cclearner deleted files if was a standard clean and not a wipe https://www.piriform.com/recuva May work, may not.
Thanks for the hints. I'll look at it. Nevertheless I already recovered 2 deleted jsonlz4 files with https://www.easeus.com/data-recovery-software/ which I mentioned above.
Did you verify that the recovered files weren't corrupted as can always happen in case involved clusters have been reused?
Hi cor-el, this is really a great page ! I checked the 2 session files I could recover and both seems to be corrupted. Both files show in the beginning regular data but suddenly they only show some crazy signs
"..."userTypedValue":"","userTypedClear":0,"image":null,"iconLoadingPrincipal":null},{"entries":[{"url":"http://li...."
I'll check once more whether I could find some further jsonlz4 files. I have another 2 older decompressed .js session files. Can I use them somehow with the Firefox v57.0.4 version or must the be compressed first ?
Firefox can restore uncompressed sessionstore files (.js), but to make this work you need to remove (rename) compressed files (.jsonlz4) and rename the sessionstore-backups folder to ensure that Firefox can't fallback to compressed .jsonlz4 files.