If you’ve opened your Firefox and found that all your tabs and session has been lost without a reason so here’s the answer to restore your lost/crashed Firefox Session!
First make sure your firefox is completly closed. (File -> Quit).
1- Go to your Mozilla Firefox profile folder
2- Open the files sessionstore.js and sessionstore.bak
3- Copy the content of the file sesseionstore.bak to the file sessionstore.js
4- Finally replace the first part of the first line:
This:
{“windows”:[],”selectedWindow”:0,”_closedWindows”:[{“tabs”:[{“entries”:
To This:
{“windows”:[{“tabs”:[{“entries”:
Now open Firefox and Happy Browsing!