Recently Firefox sometimes reports it cannot restore previous sessions when launched. The restore option is not set.
Since sometime in August 2021, I suspect after an update, occasionally when I launch Firefox it reports that it was unable to restore a previous session. I do not have the option to open previous sessions selected. On other occasions it starts properly with a blank page as it is configured to do.
Am I missing a setting?
It is not a major problem, I can simply enter a URL or search string in the address bar and it works properly for the rest of the session.
It is happening both on my Windows 8.1 Pro and Windows 10 Pro PCs running the 64-bit version of Firefox.
Any suggestions will be appreciated. Thank you.
All Replies (1)
Firefox is set up so that; in the event the browser thinks it has crashed, the last session is restored when the browser is started again. Note: This can also be caused by not shutting down the browser properly. Menu > File > Exit.
You may have corrupt sessionstore [v56] sessionstore.jsonlz4 file(s). Delete all sessionstore* files and the sessionstore-backups folder.
Don't delete the files if you need to rescue any data from them, just move them out of the profile folder to some location where Firefox doesn't look for them. You can try to read out their contents using this tool: https://www.jeffersonscher.com/res/scrounger.html
Type about:support<enter> in the address bar.
Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.
Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
Linux: Under the page logo on the left side, you will see Application Basics. Under this find Profile Directory. To its right press the button Open Directory.
Locate the above file. Then rename or delete it. Restart Firefox.