You may be able to fix the problem by finding the content type that is set to use Firefox and then changing the action, using these steps: We're having trouble getting your pages back.') page when you restart Firefox, click the Start New Session button to start a new session and then follow the instructions given below to fix the problem. The same multiple tabs or windows may start opening when you next start Firefox, forcing you to close Firefox again.

Firefox includes a Session Restore feature that can restore your windows and tabs from the previous session after a crash or unexpected close. You may be forced to close Firefox if it is repeatedly opening multiple tabs or windows.