This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox 15 not automatically restoring previous sessions

  • 2 replies
  • 8 have this problem
  • 7 views
  • Last reply by cor-el

more options

Just as the subject implies, I'm having issues with the new Firefox.

Used to, whenever my Firefox would unexpectedly crash or I'd close it in the Start Task Manager and I re-started Firefox, I would be prompted by the screen that says "Whoops, this is embarrassing, restore previous session?" or something along those lines. I'd restore my session, and everything would be fine.

But the past week or so, whenever my Firefox has crashed or gotten closed and I restart it, my previous session does not restart. At that point I can go to History and click Restore Previous Session, but it doesn't bring back everything that I had opened. It's like it doesn't keep anything. Needless to say, this is frustrating, because it's never done this to me before. If anyone has any suggestions on how to fix this, it would be greatly appreciated.

For the record, I have gone into Tools and told it to show my tabs and windows from last time selected, and I also have it set to remembering my history. Is there anything that I can do to fix this issue?

Just as the subject implies, I'm having issues with the new Firefox. Used to, whenever my Firefox would unexpectedly crash or I'd close it in the Start Task Manager and I re-started Firefox, I would be prompted by the screen that says "Whoops, this is embarrassing, restore previous session?" or something along those lines. I'd restore my session, and everything would be fine. But the past week or so, whenever my Firefox has crashed or gotten closed and I restart it, my previous session does not restart. At that point I can go to History and click Restore Previous Session, but it doesn't bring back everything that I had opened. It's like it doesn't keep anything. Needless to say, this is frustrating, because it's never done this to me before. If anyone has any suggestions on how to fix this, it would be greatly appreciated. For the record, I have gone into Tools and told it to show my tabs and windows from last time selected, and I also have it set to remembering my history. Is there anything that I can do to fix this issue?

All Replies (2)

more options

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

more options

In case you are using "Clear history when Firefox closes":

  • do not clear the "Browsing History"

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.