Every time firefox starts it opens a second window to check for Plug in updates!

The first time, I updated all but the Adobe Reader. It crashed.
I have turned off adobe, and still, every time I start Firefox the update plugins opens as the second window

That is a bug with blocklisting plugins that has been fixed. 
You can correct this issue by forcing the file blocklist.xml to update or wait until Firefox updates the file. 
That update will remove the severity="0" flags in the file that cause the problem.
See:
* [/questions/832793?page=2#answer-198407]
* http://forums.mozillazine.org/viewtopic.php?p=10899869#p10899869
* [https://bugzilla.mozilla.org/show_bug.cgi?id=663722 Bug 663722] - The blocklist output is including severity="0" where it shouldn't be

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Firefox opens the old browsing window (previous session) every time i try and open a new window, how do I change this back?

Every time I go to open a new window, the old one will come up instead. For a while it was working fine, then I kept needing the old window and would use the 'restore previous session' feature to access this. However, even after I didn't need it anymore (and without me selecting the feature, it would still open the previous session.

Tools > Options > General > Startup: "When Firefox Starts": "Show my home page" "Show a blank page"
It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
Delete the files sessionstore.js [2] and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
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 and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).
See also:
* [1] http://kb.mozillazine.org/Session_Restore
* [2] http://kb.mozillazine.org/sessionstore.js

I have Mozilla Firefox installed, w/. my Home Page setup to be opened on It every time. I can open a new window on It too, but when I open a new tab, every time open this new tab w/. Untitled Page. I wanna It opening w/. my Home Page.

I have Mozilla Firefox installed, w/. my Home Page setup to be opened on It every time. I can open a new window on It too, but when I open a new tab, every time open this new tab w/. Untitled Page. I wanna It opening w/. my Home Page.

Firefox is coded to open new tabs in a blank page. That may change in Firefox 4. I don't know.
In the meantime, there is an add-on called Tab Mix Plus that I think provides that option. https://addons.mozilla.org/en-US/firefox/addon/1122/

I have to enter login information and "secret phrase" every time Firefox starts up.

I have to enter login information and "secret phrase" for Sync every time Firefox starts up. Sync tells me I am using a new computer, which isn't the case. This is the same computer I set up Sync with.
What am I/is Sync doing wrong?

There could be several things.
Does everyone using the computer have their own user profile?
Check the history settings. Is it set to remove cookies?
Type '''about:preferences#privacy''' <Enter> in the address bar.
The button next to '''History,''' select '''Use Custom Settings'''.
Some Anti-Virus, Disk Cleaning, and other programs will remove things
from your browsers. Including history and cookies.

Why does iPhoto start up every time I start the computer. I have not checked any box at shut down.

Why does iPhoto start up every time I start the computer. I have not checked any box at shut down.
Thanks,
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Is it on your Log-In items?
Do you have a disk or device formatted like a camera card attched to your computer - say with a FAT format?

Have to refresh Yahoo bookmarks every time Firefox starts for it to open

Every time I start the 4.0 Firefox I have to refresh the Yahoo bookmarks several times for it to open completely for them to
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I dont use tabs and only use the Yahoo toolbar bookmarks(about 200)they dont show up in the Firefox or IE bookmarks.After starting Firefox from being offline
these dont open.From the pulldown button in the toolbar I go to tools>then refresh bookmarks sometimes several times for them to open all the way for normal use.It was'nt until the more recent updates this started happening.Another thing started happening at the same time in the Yahoo mail when trying to delete mail from the spam and trash folders when you select all>delete the cursor would go right to the to the OK button.Now I have to drag
it to the button.this only happens in Firefox in Yahoo mail.
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I get error message every time firefox starts: xmlNode.getElementsByTagName("id")[0].firstChild is null - 2

About two weeks ago I started getting this error message every time I started up Firefox: xmlNode.getElementsByTagName("id")[0].firstChild is null - 2.
I uninstalled and reinstalled Firefox, but the error continues. Then I did a System restore to several months ago, but the error continues. It doesn't happen with any other program.
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Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your 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]] and [[Troubleshooting plugins]]
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
* Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
See also http://kb.mozillazine.org/Standard_diagnostic_-_Firefox (Extension_issues, Profile_issues)

I am on the Adobe Cloud, but for the past few days every time I attempt to open indesign I get the message missing plug-in Actions. RPLN, and the app will not open.

I am on Adobe Cloud but over the past few days every time I try to open indesign I get the message that there is a missing plug-in Actions. RPLN, and the app will not open. Any ideas?

Hi, when I try to open indesign itself this message comes up:
Adobe Indesign cannot load the ACTIONS.RPLN plug-in. The plug-in requires
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compatible version of ACTIONS.RPLN.
I am not able to click off the message to make the box disappear, so have
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HOW DO I STOP THE 3 UPDATE TABS FROM APPEARING EVERY TIME FIREFOX STARTS ???

I have gone into the updating section of Options & UN-ticked thgem but the still appear every time !
Using XP pro & FireFox 9.0.1

Hi MadogM,
Are you saying you always see the tab telling you that you've updated? If that's the case, you should look at [https://support.mozilla.com/kb/Firefox+has+just+updated+tab+shows+each+time+you+start+Firefox this article about that specific issue] and the article [http://kb.mozillazine.org/Preferences_not_saved Preferences not saved]. These should give you all the information you need!
If that doesn't work:
# Type about:config in the address bar
# Click ''I'll be careful, I promise'' if prompted
# In the Filter input field type ''startup''
# Double click on startup.homepage_override_url
# Delete the text string and click ''OK''
# Close Firefox and reopen the window to verify that it has worked.
Hopefully this helps!

EVERY time I start Thunderbird, a new installation window opens

Every time I open Thunderbird a new installation window (file extraction) opens as well. Whether I proceed through to finish or cancel, the result is the same. Thunderbird appears to be working normally in every other way, but this window opens each and every time I open a new session - please help!!!

Hey There Christ1 -
The target ended up being right, so I disabled addons and renabled them one by one hoping I would find the problem. As it turned out, when I finally got down to ReminderFox (one of my faves :-( that one triggered this reaction every time, so unfortunately until the developer comes up with a fix for that, I've just kept it disabled... Thanks again for your help - and anyone else who may be having this problem, try disabling this add on for now (bummer)!
Thanks again everyone!
tls

Get a null error every time I try to open a new window.

Every time I try to start Firefox or open a new window. I get the below error. This does not happen with explore or chrome.
[JavaScript Application]
TypeError: xml is null

This may be caused by a problem with an extension, to test this follow the procedure in the [[Troubleshooting extensions and themes]] article.

(Legitimate) Pop up Windows every time Firefox starts

So, lately each time I fire up Firefox, the new browsing session recovers pop up windows from previous sessions (from the last time or even some from like, three days ago) I have long closed down. My start up option has always been "Show my windows and tabs from last time" which used to do exactly that: recover tabs I had opened or start with a new blank tab in case I had none opened. Now though, each time I open FIrefox I am getting various windows from previous session(s).
The catch here is that this doesn't APPEAR to be a malware issue since I am not getting weird ad/dodgy windows but "legitimate" pop ups I remember I have personally triggered i.e a picture or frame from a trusted site which opened into a new window or a help section from amazon.com etc.
This is a first and as you can imagine it has become really annoying. I am using Firefox 25.0.1.
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Thanks for your replies philipp and james
Yeah, it seems it's a case of firefox not shutting down properly since the problem appeared ever since I've begun closing down firefox by ending the process (mind you, with a cmd shortcut icon even) in an attempt to efficiently escape from the never-ending flash player script hangs/crashes (disabling hardware acceleration or reinstalling flash player doesn't help).
Deleting all the sessionstore ... files solved the pop up windows issue.

I can set my home page but every time firefox starts it goes back to the page I changed it from

I keep having to change the home page. I joined a site that changed the home page. I uninstalled this program but I am unable to get firefox to change the home page. This does not happen with IE when I change the page it stays. No matter how many times I try it always goes back to
http://home.ibryte.com/im/6962727974656261736963

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

After updating a program (Family Tree Builder), I started Firefox and now have a special tool bar for My Genealogy every time I start up....did not ask for it, don't want it....deleted the program, but how do I fix Firefox?

I then deleted Firefox as a program and lost all my bookmarks, special apps....how do I delete the special tool bar (and start page) without having to delete Firefox and my setups.

Hi ed652gray. You may uninstall the toolbar on the Control Panel, using the "Uninstall a program" option. Look for something like "Family Tree Builder Toolbar" or "My Genealogy Toolbar".
If you only want to hide the toolbar, you can check this article:
https://support.mozilla.org/en-US/kb/how-do-i-customize-toolbars?s=toolbar&r=3&e=es&as=s#w_how-do-i-show-and-hide-the-different-toolbars
And to restore your default home page, you can check this article:
https://support.mozilla.org/en-US/kb/How%20to%20set%20the%20home%20page?s=home+page&r=0&e=sph&as=s#w_restore-the-default-home-page

When Firefox starts it opens 22 new windows.

All of a sudden when I first start Firefox it opens literally 22 new blank windows. It used to be that one of them was my last browsing session but now they're all blank without even a home page or my pinned app tabs. I have no idea why that started, I don't think I changed anything.

It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.
Delete the files sessionstore.js [2] and sessionstore.bak in the Firefox Profile Folder.
* Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
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 and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).
See also:
* [1] http://kb.mozillazine.org/Session_Restore
* [2] http://kb.mozillazine.org/sessionstore.js

Every time firefox starts it opens a second window to check for Plug in updates!

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