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Firefox can automatically restore windows and tabs that were open the last time you used it. Learn how to set up options for controlling it.

Firefox can restore all windows and tabs that were open when it was last closed or terminated unexpectedly. This article describes the circumstances under which Firefox will restore your previous session and how you can configure it. {note}'''Note:''' Session Restore may keep you logged in to sites that you were logged in to before you closed Firefox. For more information, see [[#w_privacy-issues|Privacy issues]].{/note} __TOC__ = When session restore occurs = == When you select Restore Previous Session from the Firefox menu== {for not fx89} Here's how to get your tabs and windows from a previous session back using the Firefox menu: #Click the menu button [[Image:Fx57menu]] on the right side of your toolbar. #Select {menu Restore Previous Session}. #;[[Image:Fx57RestorePreviousSession]] {/for} {for fx89} Here's how to get your tabs and windows from a previous session back using the Firefox menu: #Click the menu button [[Image:Fx57menu]] on the right side of your toolbar. #Click {menu History} and then select {menu Restore Previous Session}. #;[[Image:Sessionrestore89]] {/for} == After a Firefox update == To apply any updates to the Firefox application that have been downloaded, you must restart Firefox. To restart, click {button Restart to update Firefox}. ;{for win}[[Image:Fx70aboutFirefox-Restart]]{/for}{for linux}[[Image:about-Fx59-restart]]{/for}{for mac}[[Image:Firefox 70 MacOS Restart to update]]{/for} == After restarting with add-ons disabled == When you [[Troubleshoot Firefox issues using Safe Mode|restart with add-ons disabled to troubleshoot Firefox problems]], your tabs and windows will be reopened. == After a crash == Due to unexpected issues such as problems with a website, software errors, or an accidental loss of power, Firefox may unexpectedly close. In these situations, Firefox can restore the pages that you were visiting when it is restarted. Firefox will automatically restore your previous session, the first time you launch it after a crash. If Firefox crashes a second time, the Restore Session page will appear when you next launch Firefox. ;[[Image:session restore 57]] * To restore your previous session, select the windows or tabs you want to restore and click {button Restore Session}. * If Firefox continues to experience errors when windows and tabs are re-opened, you can launch Firefox without restoring these items. To start a new session, click {button Start New Session}. {for not fx61} ==When you've set Firefox to show your windows and tabs from last time== You can set Firefox to always show your windows and tabs from your previous session each time you start Firefox. To change your Firefox startup settings, see [[#w_configuring-session-restore|Configuring session restore]], below. {/for} {for fx61} ==When you've set Firefox to restore the previous session at startup== You can set Firefox to always show your windows and tabs from your previous session each time you start Firefox. To change your Firefox startup settings, see [[#w_configuring-session-restore|Configuring session restore]], below. {/for} =Configuring session restore= By default, when Firefox starts, a single window is opened, displaying your specified home page. If you wish, you can configure Firefox to open all windows and tabs from your previous session: ;{for not fx61} [[Image:Fx57General-WhenFirefoxStarts-Show-windows-and-tabs]]{/for}{for fx61}[[Image:Restore2_61 - Mac]]{/for} {for not fx61} # [[T:optionspreferences]] # Select the {menu General} panel. # Below '''When Firefox starts''' select {menu Show your windows and tabs from last time}. # [[T:closeOptionsPreferences]] {/for} {for fx61} # [[T:optionspreferences]] # Select the {menu General} panel. # Below '''Startup''' select {menu Restore previous session}. # [[T:closeOptionsPreferences]] {/for} = Privacy issues = Session Restore may keep you logged in to sites that you were logged in to before you closed Firefox. If someone else used your computer after you, they could access your account on these sites. If this is a concern then you should not configure Firefox to open all windows and tabs from your previous session. You may also wish to disable the Session Restore crash recovery feature which is enabled by default. This will prevent restoring a previous session when Firefox is opened after an unexpected close or software crash: # [[T:aboutconfig]] # In the Search box at the top, type '''browser.sessionstore.resume_from_crash'''. # In the resulting grid, {for not fx71}double-click{/for}{for fx71}click the ''Toggle'' [[Image:Fx71aboutconfig-ToggleButton]] button next to{/for} {pref browser.sessionstore.resume_from_crash} to set it to {pref '''false'''}. = Troubleshooting = == Previous session not correctly closed == To get your tabs and windows back from a previous session, you should close Firefox from the menu: [[T:closeFirefox]] If you close each window or tab, only the tabs in the final window that you close are available when you restart Firefox. == Settings may be incorrect == For other session restore problems, you may need to make corrections to your Firefox settings: # [[T:optionspreferences]] # Select the {menu Privacy & Security} panel. # In the '''History''' section, make sure that the '''Firefox will''' drop-down menu is set to either {menu Remember history} or {menu Use custom settings for history}. #* If '''Firefox will''' is set to {menu Use custom settings for history} then make sure that '''Always use Private Browsing mode''' is not selected. #* If '''Firefox will''' is set to {menu Use custom settings for history} and '''Clear history when Firefox closes''' is selected, then click the {button Settings} button and make sure that '''Browsing & Download History''' is not selected. # [[T:closeOptionsPreferences]] <!-- MZ credit --> <br/> <br/> '''''Based on information from [http://kb.mozillazine.org/Session_Restore Session Restore (mozillaZine KB)]'''''