Firefox loses my open tabs whenever it locks up

Firefox often locks up. When I restart it, it always loses my open tabs. I am able to restore them from a backup, but this is somewhat tedious. Can anything be done, so that my tabs come up when I restart Firefox (which seems to make a backup of the sessionstore.js file)?

Hello,
Did you try set Firefox to always start with the last session?
Go to '''Tools''' >> '''Options''' >> '''General''' > in the option '''When Firefox starts:''' change to '''Show my windows and tabs from the last time'''
*[https://support.mozilla.org/en-US/kb/restore-previous-session#w_configuring-session-restore Configuring session restore]
Also:
*[https://support.mozilla.org/en-US/kb/how-do-i-restore-my-tabs-last-time How do I restore my tabs from last time?]

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Firefox keeps changing open tabs to new windows - how do I stop this?

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]

When I open Firefox 5.0.1 (using Windows XP Home), Firefox starts to open tab after tab automatically and I have to close the program to stop the proceeding misfunction! ??

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See [[Firefox keeps opening many tabs or windows]]

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[http://support.mozilla.com/en-US/kb/Managing+file+types]
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Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
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Your above posted system details show outdated plugin(s) with known security and stability risks that you should update.
*Shockwave Flash 10.0 r45
Update the [[Managing the Flash plugin|Flash]] plugin to the latest version.
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Make sure that you do not use [[Clear Recent History]] to clear the browsing history.
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Hello,
The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. 
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Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!
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First check to see if an add-on is causing this problem, for details on how to do that see the [[troubleshooting extensions and themes]] article.
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'''https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save?esab=a&s=save+setting&r=6&as=s'''
How to fix preferences that won't save
This article tells you how to fix issues where Firefox can't save some or all of the settings that you try to change.

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*Java Plug-in 1.6.0 for Netscape Navigator (DLL Helper)
Update the [[Java]] plugin to the latest version.
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How can I recover Firefox information (bookmarks, open tabs, etc) after "Refresh" caused profile loss?

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It sounds as though the Refresh did not complete normally. But you knew that.
Since I am a Windows user, I apologize in advance if this reply is not completely applicable to your system.
Check inside "Old Firefox Data" folder for a folder with a semi-randomized name. If there's only one, that probably has your old settings and add-ons. If there's more than one, you'll want to work with the one that was updated most recently.
Once you have identified the profile folder you want to restore, here is my suggested "old profile resurrection procedure":
'''Overview'''
These are the steps detailed below:
# Create a new Firefox profile
# Remove everything from that new profile folder
# Copy in everything from the old profile folder
'''Create a new Firefox profile'''
Quit Firefox if it's running. Start up in the Profile Manager using the method in this article: [[Use the Profile Manager to create and remove Firefox profiles]].
''Notes:''
* Do not delete anything here!
* Any time you want to switch profiles, quit Firefox and return to this dialog.
Click the Create Profile button, assign a name like OldSettings, and skip the option to change the folder location. Then select that new profile in the dialog and start Firefox.
'''Open the New Profile folder in Finder'''
Firefox in the new profile should look like a factory fresh installation. Open the Troubleshooting Information page using either:
* "3-bar" menu button > "?" button > Troubleshooting Information
* Help menu > Troubleshooting Information
* type or paste about:support in the address bar and press Enter/Return
In the first table, click the "Show in Finder" button. Firefox will launch an Finder window showing the contents of your brand new profile folder.
Leaving that folder open, switch back to Firefox, and Quit/Exit. When Firefox closes, the new profile folder should be front and center, or you can activate it using the Task bar (?? or Mac equivalent).
'''Copy Old Data in Place of New'''
In that new profile folder, select all the contents and delete. Make sure you don't delete from your old folder.
Leaving that window open, open or switch over to your Old Firefox Data folder. Drill down into your old profile folder. At this level you should see a folder named bookmarkbackups among other things.
Select everything and Copy (either right-click > Copy or Command+c).
Switch to the empty new profile folder in other window and Paste (either right-click > Paste or Command+v). This may take a minute since some of the files are large.
'''Start Firefox'''
Firefox should start up in that new profile with the resurrected old profile data. Success?

I've done something and Firefox don't open tabs when I click on the open new tab and when I click on right click there is a lot of options..

Wheb I click right click there's a lot of option, before I use to have just a few. I wish that I can send you a photo how that looks.

You can't attach a screenshot to the first post that starts a thread, but you can do that in subsequent replies.
You can check for issues caused by an extension that isn't working properly.
Start Firefox in [[Safe Mode|Safe Mode]] to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
*Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
*Do NOT click the Reset button on the Safe Mode start window
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Can't open tabs from previous session (after Firefox regularly closed)?!

Regularly closed firefox 36.0.4. and shot down computer (Windows 7 Pro 64-bit).
On next start, Firefox doesn't open tabs from previous session (altought it is configured to do this) !?!?!?
I lost about 30 tabs!!
Very, very frustrating!!!
Think to finish using Firefox forever!!!!!

Don't exit Firefox! Or if you already did, don't start it back up again!
''If Firefox is running:'' Open your current Firefox settings (AKA Firefox profile) folder using either
* "3-bar" menu button > "?" button > Troubleshooting Information
* (menu bar) Help > Troubleshooting Information
* type or paste about:support in the address bar and press Enter
In the first table on the page, click the "Show Folder" button. This should launch a new window listed various files and folders. For best results, change the view to "Details".
(''If Firefox not running, get to this folder by pasting the following in the Run box on the start menu and pressing Enter:'' %APPDATA%\Mozilla\Firefox\Profiles ''and then double-click into the most recently updated semi-randomly-named folder you find there.'')
In the window that launches, scroll down and double-click into the '''sessionstore-backups''' folder. Save all files here to a safe location, such as your Documents folder, so Firefox doesn't overwrite them. We may be able to use them to recover your lost tabs.
Also, if you return to the main level of the profile folder, you may find some sessionstore files. Copy those to the safe location as well.
Could you report back on what you found?
Note: If Windows hides the .js file extension from you, you can change a setting so that you can see all file extensions (this helps when renaming files). This support article has the steps: http://support.microsoft.com/kb/865219 or http://windows.microsoft.com/en-us/windows/show-hide-file-name-extensions
The kinds of files you may find among your sessionstore-backup files are:
* recovery.js: the windows and tabs in your currently live Firefox session (or, if Firefox is closed, your last session)
* recovery.bak: a backup copy of recovery.js
* previous.js: the windows and tabs in your last Firefox session
* upgrade.js-''build_id'': the windows and tabs in the Firefox session that was live at the time of your last update

Firefox loses my open tabs whenever it locks up

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