Suddenly under FF24 my open tabs are grey

I have been using FF from the beginning. Today 10/09 days after the update to FF24 I notice that the tabs that are not open are grey, there were never before.

Hello,
The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. 
'''Note''': ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
#Firefox will open with all factory defaults applied.
Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!
Thank you.

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The recently open files are greyed out.

The recently open files are greyed out.
I am using Word Excel 2003 and Windows 8.1
I have uninstalled and re installed to no effect.
Any suggestions welcome.

Hi,
Please try the following 2 methods:
1.Click to select the Add new documents to Documents on Start Menu check box on the
IE tab of Tweak UI. To do this, follow these steps.
Note To perform the following steps, you must be logged on as a member of the local Administrators group.
In Control Panel, double-click Tweak UI.
Click the IE tab.
Click to select the Add new documents to Documents on Start Menu check box, and then click
OK.
http://support.microsoft.com/default.aspx?kbid=284896
2.Go to Start—>Run—>Type regedit click ok
Now you need to navigate the following key from left pane
HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\EXPLORER
Now you need to select the following key and delete from right pane
NoRecentDocsHistory
Exit your registry editor
Now you need to go open MS office application click on Tools—>Options
Click on General Tab, Check the Recently used file list checkbox and use the designated dropdown to select the desired number of entries and click ok
Note Please backup your Registry before modifiying.
http://www.windowsreference.com/ms-office/fix-for-ms-office-2003xp2000-recently-used-file-list-is-grayed-out/
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Regards,
George Zhao
TechNet Community Support

My open tabs are not being restored/remembered after closing

Hi,
I have my settings set to "Show windows and tabs from last time", however for some reason its not working anymore. Whenever I close my tabs, Firefox warns me that I'm closing multiple tabs and when I reopen Firefox, I only get my homepage.
In the options menu, I've set the options to be "Show windows and tabs from last time" and in the Privacy setting, I have "Firefox will remember history", so I don't think its my settings.
I saw a thread about "browser.sessionstore* prefs" on a previous page that seemed to work for them, but all of my prefs seem to already be set to default (which is what was recommended), so I'm not sure what I should do there? I'm not tech savvy, so I dont feel comfortable mucking around with those settings when I dont really know what I'm doing, and they all seem to be set to default anyway.
Also, my 'restore previous session" and "restore recently closed tabs" are greyed out in the history section, so the only way I have to get my tabs back is to open "recently closed windows".
If anyone could please point me in the right direction to solving this it would be MUCH appreciated! I rely on this feature heavily, and am finding it really frustrating to not have easy access to my tabs from last session.
Thank you!

When updating to version 36, if you are updating from more than two versions before, the session file structure changed in your profile. This is now in sessionstore-backups folder. However this should not affect if updating from 35.
Are these also greyed out:
Recently Closed Tabs & Recently Closed Windows
It is greyed out "either due to:
* your startup setting ([[Startup, home page and download settings]])
* Firefox recovering from a crash during shutdown, or
* a user.js file overriding your normal startup setting (your system info doesn't show the third file, so I think we can rule that out)"
For future times that this may happen, the add on: session-manager is a nice backup to have.
Reference this for restoring a session file in a previous version of Firefox: [https://support.mozilla.org/en-US/questions/1026370]

My open tabs are not being remembered when I close and re-open Firefox 4 even though I selected this feature in Options.

My open tabs are not being remembered when I close and re-open Firefox 4 even though I selected this feature in Options. Can anyone tell me why?

App tabs and Tab Groups (Panorama) are stored as part of the session data in the file sessionstore.js in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder]
* http://kb.mozillazine.org/Session_Restore
Make sure that you do not use [[Clear Recent History]] to clear the "Browsing History" if Firefox is closed.

Cannot use icloud tab option on ipad and iphone as the open tabs are not listed.

cannot use icloud tab option on ipad and iphone as the open tabs are not listed.

just checked everything through and this is deffinately the public beta of iCloud as it simlily doesnt come up in the settings of ipad or iphone. However the current firmware i am using isnt an itunes download, as i have downgraded and all itunes synced apps onto both the iPad and iphone crash when i open them, is this because i have downloaded the firmware from a third party? i have treble checked that the firmware is NOT hacked and is just a host's official apple firmware, so i cannot understand why this problem is occuring?

How do I change to background color in the open tabs; currently grey with black text, hard to read.

In FF 4.0 can I change the background color of the open tabs. Currently it is grey with black type. A lighter background would be easier to read.
Thanks, TJH

Download this addon: https://addons.mozilla.org/en-us/firefox/addon/stratiform/ It allows you change the color of the tabs, plus many other options.

My FF crashes many a times and the last opened tabs are not restored. The Restore Previous Session under the history tab is greyed out and the the Session restore button on about:home is not there and im using FF 8.0.1

The tabs on about:home is not there instead there are Firefox advertisements and the restore button under history is greyed out>

Make sure that you do not run Firefox in permanent Private Browsing mode.
*https://support.mozilla.com/kb/Private+Browsing
To see all History and Cookie settings, choose:
*Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
*Deselect: [ ] "Always use private browsing mode"
See also:
*http://kb.mozillazine.org/Session_Restore
*https://support.mozilla.com/kb/Session+Restore

The option in Tools/Options to show my windows and tabs from last time has suddenly stopped working and all tabs are deleted when Firefox is re-opened.

For some unknown reason this option has died. I have not changed anything and checked that the setting is correct. How do i get it working again. I work across a number of tabs at a time and have now lost a session and cannot recall all the websites concerned.

You can check the browser.sessionstore.* prefs on the about:config page and reset user set (bold) browser.sessionstore.*prefs to the default value via the right-click context menu to make sure that Session Restore is enabled and working properly.
*http://kb.mozillazine.org/Session_Restore
*https://support.mozilla.org/kb/restore-previous-session
You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data.
Delete the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox profile folder.
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Multiple_profile_files_created
Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

Which (of many) open tabs are using CPU?

Occassionally I have a bunch of tabs open in Safari and it jumps up in CPU usage. Sometimes it's using so much that I have to close and reopen (I gather there's a memory leak in Safari, whatever that is.)
But I often find by trial and error that there's just one tab with an animation running in the background or other annoying use of my cpu. I'd like to be able to see a list of the open pages' cpu usage, like an Activity Monitor for Safari.
Anybody know how to do such a thing?
Powerbook 15" (Al) Mac OS X (10.4.3) I had a Mac Plus, twenty years later I got a Powerbook. What's my next move?

You need to use "Firefox/File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit") to close Firefox if you are currently doing that by clicking the close X on the title bar to close Firefox with all open windows at once. Otherwise only the last closed window will be restored. If this did happen then check History > Recently Closed Windows to see if any are listed (default is 3).

Open tabs are not on tab strip. Have to click on List All Tabs button to find tabs. Tabs used to display on tab strip and stopped doing this. Suggestions?

Been using Firefox for years, running Windows XP. This morning when I opened pages in another tab, did not see them on tab strip. Only way to find them is to click on List All Tabs Button and it shows list. Cannot get them to display on tab strip. If I open in another window, it works, like it should. If I click on plus sign on tab strip it opens another tab, but can't see the previous ones except with List All Tabs Button. Any suggestions on how to turn tab strip back on? Thanks, jayem33

If it works in a new window then you can drags tabs from the not working window to that new window.
You can also try to close the tabs via Ctrl+W and restore the closed tabs via Shift+Ctrl+T

How to change the homepage for a new tab when the home page of the initial tab and subsesequently opened tab are different?

When iam using firefox i selected google as my home page. But while opening another tab in the same window(ctrl+T), I am getting babylon search as home page for it. How can i get rid of this problem?

'''''"...while opening another tab in the same window(ctrl+T), I am getting babylon search as home page for it."""
Any search toolbar and changes to search engines can take place by downloading and installing software; usually "free" software from the internet. Babylon can be downloaded and installed by itself or as a "ride-along" when installing/updating some software from the internet. Always look for an opportunity during the installation to un-check boxes that will install "ride-along" items that you do not want. Firefox installation does not include such "ride-along" items.
#Remove Babylon Toolbar (if you have it installed). The most complete removal is to remove it from your system using (Windows) Control Panel > Add or Remove Programs): http://kb.mozillazine.org/Uninstalling_toolbars#Uninstalling_via_Windows_Control_Panel 
#*Also see:
#**http://support.mozilla.com/en-US/kb/Uninstalling+add-ons
#**http://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on
#**http://kb.mozillazine.org/Uninstalling_toolbars
#Reset your home page (if the Babylon search page is displayed when starting Firefox): http://support.mozilla.com/en-US/kb/How+to+set+the+home+page
#*You can reset to the default by clicking "Restore to default" on Options > General > Startup > Home page. Be sure to set "When Firefox starts" to "Show my home page" on that same panel.
#Reset your Location Bar search engine (if typing a few words in the URL/Location Bar takes you to Babylon search):
#*type '''''about:config''''' in your Location Bar, like typing a web site address, and press the Enter key
#*ignore warning and choose to continue
#*in Filter, type '''''keyword.URL'''''
#*in lower part of screen, if it is '''bold''' and shows "'''user set'''", right-click keyword.URL and choose "Reset"
#*in Filter, type '''''babylon'''''
#*any items in lower part of screen in '''bold''' and showing "'''user set'''", right-click and choose "Reset"
#*close about:config tab
#*See:
#**http://kb.mozillazine.org/About:config
#**http://kb.mozillazine.org/Location_Bar_search#Location_Bar_search_.28external_-_search_engine.29
#**http://kb.mozillazine.org/Keyword.url
#**http://www.techrena.net/computers/address-bar-search-provider-firefox/
#If Babylon is shown in your Search Bar and you want to remove it:
#*https://support.mozilla.com/en-US/kb/Search%20bar
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''
Not related to your question, but...
You may need to update some plug-ins. Check your plug-ins and update as necessary:
*Plug-in check --> http://www.mozilla.org/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]
*'''''Shockwave Flash''''' (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

I just installed Firefox 4, and now all my open tabs are gone. Thank you Mozilla!

Did system restore and now I don't have Firefox at all...cannot open it.

If you used a remove personal settings option from Windows or Firefox,you may well have permanently lost those bookmarks.
* Undelete If you did that then timely use of a file undelete utility and a good helping of luck are likely to be required to attempt recovery (probably best to stop using
the computer entirely, until you have such utility).
*Your Own Backups You could have a backup system in place that backs up such files or the firefox profile, and you may be able to use that.
* Synced to another machine you may have the bookmarks synced on another machine, or even on an external server
**see [[what is firefox sync?]]
See also [[lost bookmarks]] but I am not sure any of that applies in this case, it is worth reading it though
Normally

Ctl-T nor the File-Open Tab are working any more. Did you kill this?

I am a heavy user of the Ctl-T function, which opens a new tab on my existing Firefox screen. It is no longer working. Also, when I select File - New Tab, that doesn't open a new tab either.
The File - New Window option works, but I don't want to have multiple Firefoxes open on my system.
I've used this feature forever, and in the last couple of weeks (didn't notice the exact time), it stopped working. Did you change something?

Try uninstalling the Ask toolbar and it should work again. There is a compatibility issue with the Ask toolbar and the current version of Firefox.

All of a sudden all of my open tabs closed. How do I get all to reopen?

I normally keep about 8 tabs open all the time. Today, as I was send a birthday greeting on Facebook, all of the tabs closed without Firefox crashing. Now I cannot get the tabs to reopen even when I close Firefox and reopen it. How can I restore what was there when this happened? I think it has something to do with Tab Groups, but I'm not sure.

Please also try this, if you haven't set new tabs: '''Help''' ('''Alt''' + '''S''') > '''Troubleshooting Information''' > '''Open Containing Folder''' (this opens your [http://kb.mozillazine.org/Profile_folder Firefox Profile Folder]) and exit Firefox. Copy the '''sessionstore.bak''' and '''sessionstore.js''' files in the opened folder to another location and right-click each of the files in turn > '''Restore previous versions'''. Look for a time corresponding to the time when the lost tabs were open and '''Restore''' those. If unsure, you can try different time points. Please note that restore may not be present on every Windows 7 OS versions.
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Files]

Firefox suddenly changed so now the tabs are hidden and the taskbar at the bottom of the screen is gone completely. What happened and how can I get these back?

Things have suddenly changed on my Firefox. My taskbar has disappeared completely from the bottom of the screen. How do I get it back?

Hit the F11 button and get out of fullscreen.

Suddenly under FF24 my open tabs are grey

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