Sessionstore files only store your sessions. places.sqlite stores your History and Bookmarks.

Try using the Windows 10 "Recycle Bin" to undelete files you want to restore.

https://support.microsoft.com/en-us/help/4026350/windows-find-the-recycle-bin

Hi GotMilk

Could you please keep the discussion in one thread and not keep creating a new thread for each answer. I've locked the other two threads.

• /questions/1253138 Hi. I deleted these files per wrong advice: sessionstore [v56] sessionstore.jsonlz4 file(s). How can I restore & save my book marks if I have to un/reinstall?
• /questions/1253130 Fred. I deleted the folders from Part 1. Want to un/reinstall FFox. How do I save my book marks, pls? Just spent hrs getting them sorted yesterday!
• /questions/1253120 Hi. Keep trying to select Restore Previous Session but Ffox won't allow. It's not even an option. What do I do to override and get Ffox to Restore? Thanks!

Hello Cor-el/Moderator - I can't figure out how any of this works, so I am posting the best way I can. I'm sorry. I've never been this incapable, but I am apparently right now. I can't find anything in Mozilla anywhere. And I don't know how to access the threads to questions I've left, so I've started leaving new questions. ...

I aim to be polite and respectful of the community.

Go to the top of any support.mozilla.org web page and press your user icon to see your Mozilla profile. Including your questions and answers.