The App Tabs I have set should open as App Tabs when I start Firefox again, but they don't!

When I create App Tabs they appear, but after closing and reopening Firexfox they have disappeared. Does this have to do with the settings of saving browsing history?

App tabs and Tab Groups (Panorama) are stored as part of the session data in the file [http://kb.mozillazine.org/sessionstore.js 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 because that prevails and prevents Firefox from opening tabs from the previous session.
If you use CCleaner then make sure that Session is unchecked in the settings for the Firefox application.

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Launch Firefox & message "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer & then re-start Firefox again, But I don't have other copies running.

Launch Firefox & message says update couldn't be installed. Check no other copies running, but none are

Upgrade your browser to Firefox 8 and check
* getfirefox.com

I copied this from your 5.0 download information: "All of the App Tabs you have set when you close Firefox will open as App Tabs when you start Firefox again." When I opened my computer today all my apptabs from yesterday had disappeared. Why?

Your download page for 5.0 stated: All of the App Tabs you have set when you close Firefox will open as App Tabs when you start Firefox again.
I liked the convenience of using App Tabs and was disappointed to find that the ones I had set up yesterday were gone today. Am I doing something wrong?

Works fine for me, I can simulate your problem by improperly closing Firefox.
The correct way would be to close the windows you don't want and then to exit Firefox through the File ("'''Alt+F'''") menu then use '''Exit''' or '''Qui'''t depending on your system.
But '''I can simulate your problem''' by closing the good window with "X" in the upper right-corner first (the one with the app-tabs) and then close the other window by any means.
You restart Firefox and open a window, since you closed without app-tabs there are none so you just see a window with your home page.
Firefox has some things added to Firefox 4 and therefore in Firefox 5.
# "'''Alt+S'''" (Hi'''s'''tory menu)
# "'''Restore Previous Session'''" (that's the window without the app-tabs, but you have to this first)
# "'''Restore Recently Closed Windows'''" -- can choose which window to reopen based on name and the mouse-over tells how many tabs. or you just use "'''Restore All Windows'''" without the guessing.
''I know you are on a Mac, and this affects Windows user more than anybody else, but it does affect other systems besides Windows, occasionally, perhaps more often now with the plugins container.''
The following may not completely eliminate having to terminate Firefox through the Windows Control Panel but it will come very close.
'''Plug-in and tasks started by Firefox may continue after attempting
to close Firefox''' The "X" in the upper right-hand corner closes the
Window (same as Ctrl+Shift+W) but even if it is the last Firefox window,
it does not necessarily close Firefox .
The only '''proper way to exit Firefox''' is to use '''Exit''' through the
File menu, not the "X" in the upper right corner of last Firefox window.
In the Firefox 4 and 5 that would be Alt+F then X
* '''Firefox hangs''' | Troubleshooting | Firefox Support http://support.mozilla.com/en-US/kb/Firefox%20hangs#w_hang-at-exit
Use the '''Windows Task Manger''' to remove all running firefox.exe in the "'''Processes'''" tab of the Windows Task Manager, then restart Firefox.
If Firefox will still not start, remove the parent.lock file from the profile which is created each time Firefox is started to prevent other Firefox tasks from running, see 
http://kb.mozillazine.org/Profile_in_use#Remove_the_profile_lock_file
'''Avoiding Problems with close/restart''' ''choose either extension''
:Use to close and restart Firefox after enabling or disabling an extension, switching to a new theme, or modifying configuration files, then you don't have to worry about delay or have to look in the Task Manager to see if Firefox is closed yet.
Both extensions use the same keyboard shortcut "'''Ctrl+Alt+R'''" or a file menu option.
*"'''Restartless Restart'''" extension for Firefox 4.0+ only (2 KB download ) https://addons.mozilla.org/firefox/addon/249342/
*For older versions use "'''QuickRestart'''" extension (34 KB download) ( https://addons.mozilla.org/firefox/addon/3559/

I have just signed upfor family sharing. Is there any way you can get the same app on two devices but not have to share it? My sons both want clash of clans but they don't want to be on the same village and they can't both be on app at the same time?

I have just signed up for family sharing. Is there any way you can get the same app on two devices but not have to share it? My sons both want clash of clans but they don't want to be on the same village and they can't both be on app at the same time?

hi, the app is not "shared", it works as if you bought the app twice with different accounts, only you paid it once. they should have 2 different villages since they're on 2 different devices.

I am unable to download iPhoto version 9.5 and iMovie version10.0, with my apple ID due to remark, this update is for an app downloaded with different Apple ID,Sign in with that Apple ID and try again,but I don't have other ID

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<Email Edited by Host>

The Early 2011 MacBook Pro shipped with Snow Leopard, so these are not the Mac App Store versions of iLife, they are the boxed software versions.
If they are in an iWork '09 folder take them out and let them loose in the Apps folder. Then reindex your HDD.
Spotlight: How to re-index folders or volumes -
http://support.apple.com/kb/ht2409

How do I stop the dialog box from popping up asking me Qs about updates when I start Firefox?

I recall electing to have Firefox ask me at startup about updates and I would like to change that and just open a browser window whenever I start Firefox.

*Sanitisminau: https://addons.mozilla.org/firefox/addon/5364/

App Tabs do not load on restart. "All of the App Tabs you have set when you close Firefox will open as App Tabs when you start Firefox again."

Use FF3 and taking a look at FF4. I set up some App Tabs. Close FF4. Open FF4. No App Tabs.
Any Help?

Are you clearing your recent history when you close Firefox?
Firefox stores App Tabs and tab group details in the same file that stores details of browsing sessions. Make sure that you have not set Firefox to delete browsing history. For details of the setting to check see https://support.mozilla.com/kb/Clear+Recent+History

All of the App Tabs you have set when you close Firefox will open as App Tabs when you start Firefox again. This is not working, windows XP system. Bug or fix?

Just installed v5 of Firefox over v4.1 to XP system, 2Gb memory. Reinstalled 2Java updates, Silverlight and adobe reader as recommended in post firefox installation window. Rebooted and tried to make the new AppTabs work to no avail.
I"m not sure what else you need. The new AppTabs are not working. When Firefox is closed, AppTabs do not reappear when it is reopened later. They were installed by right-click on open tab as instructed on your upgrade website. Tabs were for yMail, gMail, and iGoogle. I have not tried to pin any other apps or sites. Is there anything I can do to make this work, or is this a bug? Thanks for the assist. mikeS

It is possible that there is a problem with the files [http://kb.mozillazine.org/sessionstore.js sessionstore.js] and sessionstore.bak in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder]
Delete the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/sessionstore.js
If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well. 
Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).
See also:
* http://kb.mozillazine.org/Session_Restore

All of the App Tabs I have set when I close Firefox will not open as App Tabs when you start Firefox again.

the browser opens without any tabs just the main bar and the tabs below it

It is possible that there is a problem with the files [http://kb.mozillazine.org/sessionstore.js sessionstore.js] and sessionstore.bak in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder]
Delete the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/sessionstore.js
If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well. 
Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).
See also:
* http://kb.mozillazine.org/Session_Restore

TS3899 I "cannot Get Mail The connection to the server failed". Have tried deleting my e mail account and adding my account again but same result. Grateful for any suggestions.

I "Cannot Get Mail. The connection to the server failed." Have tried deleting my mail account and then adding again but still no mail. Grateful for any suggestions to remedy this?

I have this problem too. Anyone know why?

Recently updated addons open their own page when I start Firefox

Every time I update an addon to a new version I get a page telling me I've successfully updated that particular addon whenever I start Firefox. It's is very irritating.
The pages don't appear in the Tools/Options/General/Home page box but they open every time I start the browser.
I already have a page for Colorful Tabs and another for Webmail Notifier and I can't disable them unless I disable the addons. However, I don't think this is an addon problem, but a Firefox one.

Some addons load their own page immediately after an update of that extension - once - to explain what the update is all about, such as new or improved features. If that page is being displayed more than once, something is wrong in Firefox prefs.
If you don't want those pages displayed ever, you'll have to check with support for each extension that does that, to see how that "first run" page can be turned off for each each extension. I am not aware of a "standard" pref that covers every extension that does it, and I don't either of the two extensions installed that you mentioned to be able to look for a pref like that.

"All of the App Tabs you have set when you close Firefox will open as App Tabs when you start Firefox again." No they don't. Why? FF4 for mac.

I set the Ap Tabs but when I close and reopen they are not there. It just opens to my homepage tab again.

It is possible that there is a problem with the files [http://kb.mozillazine.org/sessionstore.js sessionstore.js] and sessionstore.bak in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder]
Delete the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/sessionstore.js
If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well. 
Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).
See also:
* http://kb.mozillazine.org/Session_Restore

All of the App Tabs I have set when I quite Firefox did not open as App Tabs when you start Firefox again, why?

All the App Tabs disappeared when I opened Firefox after quitting. I understand that the App Tabs that I had set remains there if I close the browser and not quit. So does that mean that I have to create App Tabs every time I restart FireFox?

App tabs and Tab Groups (Panorama) are stored as part of the session data in the file [http://kb.mozillazine.org/sessionstore.js 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 because that prevails and prevents Firefox from opening tabs from the previous session.
If you use CCleaner then make sure that Session is unchecked in the settings for the Firefox application.

I would like to get rid of the MSN homepage that was set a a default home page when I use firefox. I want to go back to the regular firefox homepage. How do I do this?

I want to get rid of the homepage that I set a while ago that goes directly to MSN news and just go back to the regular firefox search page as a default.

It's helpful to give more specific feedback if you can.
Here's the process to roll back:
First, I recommend backing up your Firefox settings in case something goes wrong. See [https://support.mozilla.com/en-US/kb/Backing+up+your+information Backing up your information] (copy your whole profile folder).
Next, download and save Firefox 3.6 to your desktop for future installation. http://www.mozilla.com/firefox/all-older
Close Firefox 4, and uninstall it. Do not remove your personal data and settings, just the program.
Then finally you can reinstall Firefox 3.6. Unless you have installed an incompatible add-on, it should pick up where you left off. If there are serious issues, please post back with details.
Note: I haven't actually tried this myself!

Tried to upgrade from firefox 3.6.2 to 3.6.3, error message says another instance of firefox is running, then 3.6.2 opens. This occurs when i start firefox after restarting the computer, or when i try to install the upgrade

Whenever i try to open firefox, i get a message that firefox cannot install the upgrade because another instance of firefox is running. Then firefox 3.6.2 will start. running windows 7 64 bit. This will occur every time i try to open firefox, after rebooting or any time i close it and reopen firefox.
== This happened ==
Every time Firefox opened
== I Ok'd the upgrade from 3.6.2 to 3.6.3

Do a clean (re)install and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
You can skip the step to create a new profile, that is not necessary for this issue.
See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

The App Tabs I have set should open as App Tabs when I start Firefox again, but they don't!

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