Hi, I have a few suggestions you might want to go through. They'll each be separated by a horizontal line.

Try the following:

1. Open the about:config page on Firefox
2. Find browser.sessionstore.restore_on_demand
3. Change the value of this string to true

Are you able to restore your tabs by going to about:sessionrestore?
Are you able to restore your tabs using the "Restore Previous Session" from the about:home page?

Hello, also, be sure you are not set firefox to Never remember history in Privacy tab, go from menu button The image "new fx menu" does not exist. > Options.

thank you

Your System Details list shows that you have a user.js file in the profile folder to initialize prefs each time Firefox starts.

The user.js file is only present if you or other software has created this file and normally it wouldn't be there. You can check its content with a plain text editor (right-click: Open with) if you didn't create this file yourself.

The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.

See also:

• http://kb.mozillazine.org/Preferences_not_saved

About:session restore is only available if the browser crashes. attempting to use the page otherwise yields no results.

My settings have been set to reopen tabs from previous session. y privacy is set to remember history, and the browser remembers site history just fine. The browser simply loses my tabs.

I think I figured this out when I had it. for some reason firefox closed but it was still running as a process. This I guess caused a new separate session each time. When I force stopped the process and reopened firefox it openned the last session I had before the issue.