Restore previous session - Configure when Firefox shows your most recent tabs and windows
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.
Table of Contents
- 1 When session restore occurs
- 1.1 When you select Restore Previous Session from the default home page
- 1.2 When you select Restore Previous Session from the History menu
- 1.3 After installing an add-on
- 1.4 After a software update
- 1.5 After restarting with add-ons disabled
- 1.6 After a crash
- 1.7 When you've set Firefox to show your windows and tabs from last time
- 2 Configuring session restore
- 3 Privacy issues
- 4 Troubleshooting
When session restore occurs
When you select Restore Previous Session from the default home page
If you had tabs and windows open when you last closed Firefox, the default Firefox home page will have a
When you select Restore Previous Session from the History menu
Here's how to get your tabs and windows from a previous session back if you don't use the default Firefox home page:
- At the top of the Firefox window, click the button, go over to and select .On the menu bar, click the menu and select .At the top of the Firefox window, click the menu and select .
- Click on the menu button
on the right side of your toolbar. Select
After installing an add-on
When a new extension or theme is installed, you must restart Firefox to enable the new add-on. To restart, click. All windows and tabs are re-opened when Firefox restarts and installs the new add-on.
After a software update
To apply any updates to the Firefox application that have been downloaded, you must restart Firefox. To restart, click.
After restarting with add-ons disabled
When you 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 (i.e. "Well, this is embarrassing") page will appear when you next launch Firefox.
- To restore your previous session, select the windows or tabs you want to restore and click .
- If Firefox continues to experience errors when windows and tabs are re-opened, you can launch Firefox without restoring these items. Click .
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 Configuring session restore, below.
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:
Click the menu button and choose . .
- Select the panel.
- From the When Firefox starts drop-down, select Show my windows and tabs from last time.
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:
In the Location bar, type about:config and press EnterReturn.
- The about:config "This might void your warranty!" warning page may appear. Click to continue to the about:config page.
- In the Search box at the top, type browser.sessionstore.resume_from_crash.
- In the resulting grid, double-click on browser.sessionstore.resume_from_crash to set it to false.
Previous session not correctly closed
To get your tabs and windows back from a previous session, you should close Firefox from the menu:
At the top of the Firefox window, click on the button and then select At the top of the Firefox window, click on the menu and then select On the menu bar, click on the menu and select At the top of the Firefox window, click on the . menu and select
Click the menu button and then click ExitQuit .
Settings may be incorrect
For other session restore problems, you may need to make corrections to your Firefox settings:
Click the menu button and choose . .
- Select the
panel and make sure Firefox will: is set to either Remember history or Use custom settings for history.
- If Firefox will: is set to Use custom settings for history then make sure that Permanent Private Browsing mode is not selected.
- If Firefox will: is set to Use custom settings for history and Clear history when Firefox closes is selected, then click the button and make sure that Browsing History is not selected.
Based on information from Session Restore (mozillaZine KB)
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Last Update: 2015-07-08