Hi, that usually means that either: * the session was restored, or * there was no session history to restore As the next step, could you check for closed windows you can reopen? Either: * "3-bar" menu button > History > Recently Closed Windows * (menu bar or Alt+S) History > Recently Closed Windows * Ctrl+Shift+N It might also be worth checking whether you have any non-visible/off-screen windows. You can use the Open Tabs panel of Firefox View for that. Either: * click the file drawer button at the left end of the tabs bar * type or paste '''about:firefoxview''' in the address bar and press Enter to load it Any luck so far?