Every time I start or close Firefox , Avira reports a malwaare problem.

Every time I start or close Firefox , Avira reports a malware problem. "A Virus or unwanted program 'HTML/Frame.tzt.3' was found in file 'C:\Documents and settings \Diane.DESKTOP\...\0CAEBd04'. "
I believe this began when I upgraded to Firefox 8.I have tried reinstalling Firefox 8, going back to Firefox 3.6, opening in safemode. Avira removes the file but warns again with each opening and closing. The warning does not appear with any other program or with IE. I am running XP.

Do a malware check with a few malware scan programs. You need to use all programs because each detects different malware. Make sure that you update each program to get the latest version of the database.
http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
http://www.superantispyware.com/ - SuperAntispyware
http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
See also "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

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Every time I go to close Firefox, it goes to the same unwanted web site that I visited yesterday, then i have to close that out to finally exit

every time I go to close Firefox, it goes to the same unwanted web site that I visited yesterday, then i have to close that out to finally exit

Did the Flash plugin crashes also happen with a previous version (10.1) of the Flash player?
If you have submitted Breakpad crash reports then post the IDs of one or more Breakpad crash reports (bp-xxxxxxxx-xxxxxxxxx-xxxx-xxxxxxxxxxxx). 
You can find the IDs of the submitted crash reports on the about:crashes page. 
You can open the about:crashes page via the location bar, like you open a website.
See:
* http://kb.mozillazine.org/Breakpad (Mozilla Crash Reporter)

Every time i start on my firefox thereis a spce between where my add-on bar goes and where it is

ok... the add-on bar at the bottom of my screen... well whether or not i have it on or off there is always a white space where it should be... so every time i turn on my firefox i have to either go check it or uncheck it to get it to go away...

see item #10 (install - Status-4-Evar restores use of status bar functionality)
in
You can make Firefox 4.0.1 look like Firefox 3.6.18, see numbered items 1-10 in the following topic [http://dmcritchie.mvps.org/firefox/firefox-problems.htm#fx4interface Fix Firefox 4.0 toolbar user interface, problems (Make Firefox 4.0 look like 3.6)]

Every time i start up my firefox it redirects me somewhere else

everytime i open or reopen my firefox it sends me to
http://www.istart123.com/?type=sc&ts=1409448826&from=bro&uid=ST500LT012-9WS142_S0V8NGTA
and i already tried uninstalling stuff, safemoding my firefox, and other stuff. It is also on my other browsers too which is weird. I've scanned my whole computer with AVG but it said it got rid of it but it's still here.

You can check the target line in the Firefox desktop shortcut (right-click: Properties) to make sure that nothing is appended after the path to the Firefox program.

Every time I try to open Firefox I get a popup saying it is already open, and to close it or restart; but it is NOT open, and restarting doesn't help.

<blockquote>Locking duplicate thread. 
Please continue here: [[/questions/880054]]</blockquote>
Question
Every time I try to open Firefox I get a popup saying it is already open, and to close it or restart; but it is NOT open, and restarting doesn't he

Duplicate Thread LOCK please
* Continue here - https://support.mozilla.com/en-US/questions/880054

Every time I start up my computer and load firefox, the theme I was using is not showing up.

Every time I start up my computer and load Firefox, the theme I was using has gone back to the default one. The theme is still on my computer and it works if I change it back, I just don't know why it won't show up when I first load Firefox.
== This happened ==
Every time Firefox opened

See http://kb.mozillazine.org/Preferences_not_saved and [[Preferences are not saved]]

Firefox Sync alerts "Incorrect password or username" every time it starts.

Every time I start Firefox, I get the following error message from Sync:
"Sync encountered an error while connecting:Incorrect account name or password. Please try again. [Preferences]"
In my about:log-sync, these lines appear:
<pre>Sync.Service DEBUG Exception: Login failed: error.login.reason.account No traceback available
Sync.Service DEBUG Not syncing: login returned false.</pre>

Turns out that my Sync password was not correctly saved in Firefox.
When I looked at my password saved in my Firefox profile (Options -> Security -> Saved passwords -> Show passwords) , some characters were different than the one I entered when I set up my account. For instance, there was an "©" instead of a "(".
I solved by it changing my password and using only "a-z" "A-Z" "0-9" characters.
(I filed a bug https://bugzilla.mozilla.org/show_bug.cgi?id=866586)

How do I stop one extra tab from opening every time I start Firefox?

Every time I open Firefox, my Yahoo homepage opens, but an additional page also opens which has a variety of website thumbnails and nothing else on that page.
In my Options, I have ONLY www.yahoo.com selected as my homepage, so only ONE page should be opening every time I start Firefox.
However, no matter what I do, this second page continues to open every time. It's very irritating, as half the time I've already begun to enter data into my homepage, then the second page pops up and switches to that and I'm typing on that page.
Please advise.

@jscher2000
Thank you!! That fixed the problem. The only add-ons I have are for my anti-virus software WebRoot, but somehow I must have installed Speed Dial without realizing it.
That fixed the problem. Greatly appreciated!!

Windows asks "Do you want the following program to make changes to this computer?" every time I start Firefox.

Neither my shortcuts nor my firefox.exe have Run As Administrator checked. And yet I get this prompt every time I start Firefox on my new laptop with Windows 7 Professional 64-bit.

unchecking "Run this program as an administrator" under the Compatibility tab in the properties of the program was my first guess....darn.
Ok I understand that this is only happening in Firefox. If you start it in safe mode does this still happen? This will tell you if its an add on or a changed configuration:[[Troubleshoot Firefox issues using Safe Mode]]

An extension automatically installs every time i start firefox

An extension from local system automatically installs every time I start Firefox after PC restart. I tried to disable it, remove it, but again after restart, it appears there. My question is how to disable addition of extensions and plugins from local system and how to block an extension. Extension name is Apps Hat 0.93.32 by nero

Thanks @the-edmeister , but your answer not satisfies my question. I also asked about disabling addon installation from local system and block an extension forever in firefox

I have to re-install adobe flash for firefox every time i start my computer even if firefox shows that my adobe flash is working it does not.I also get notices from the websites i visit (get flash e.t.c.)

i have the latest firefox 10.02 in win7 and even if firefox shows is installed my adobe flash is not working so i have to run the flash installer every time i start my pc.After this everything works fine until the next start when i have to run the flashinstaller again

There are two versions of the Flash Player plugin. One is ActiveX and only works in IE. It sounds like you have that one installed. The other one works in all other browsers.
What seems to be happening is that you have security software that's blocking one of those versions of Flash/restoring your computer state and so it gets uninstalled when you start your computer. The other possibility is that there are permission issues. Unfortunately, this isn't something that Firefox can control; it's a problem with the Flash installation (Firefox is dumb and just looks in the registry for a list of installed plugins to load).
Make sure that you're an admin on your computer when you try to install Flash and that you check your security settings. If that doesn't work, try posting to the [http://forums.adobe.com/community/flashplayer Adobe community forums] to see if other people have had similar issues and know how to address them.

How do I fix: The Plugin Check comes up EVERY time I start Firefox, AND I've installed Adobe Acrobat over 3 times but it still shows up as outdated

I crammed the info into the subject line, but to repeat...
Every time I start Firefox, the Plugin Check runs. Every ... single ... time. Very annoying. How do I get this to stop?
AND
I installed Adobe Acrobat at least 3 times, but it still shows up as "outdated". Obviously, it only truly installed once, but I tried clicking the button in vain hope that that will fix it.
But really, I simply don't want the Plugin Check to start every time.
thx

Alas, I already tried setting it to False (read it online somewhere) and it doesn't work. Perhaps if you could give guidance on why the Adobe install isn't completing, that would solve the plug-in check issue... Fingers crossed.

The welcome screen is loading every time I start up Firefox (version 5)

I recently upgraded to version 5.
Every time I start Firefox up, the "welcome to Firefox" screen is loaded in a second tab. I don't want it to load every time. The first time I launched the program was enough.

Do you see a Last 7 days folder?
If not then older history has been deleted. 
Firefox 5 doesn't use a time limit to store history like previous Firefox 3 versions did.

Every time I start up Firefox, it always prompts me to reisntall the same pile of add-ons and extentions; I install them; still happens; why?

Regarding Firefox 16.0.2. Every time I start up Firefox, especially after a period with my comp in standby mode, I am always asked to install several add-ons and extentions. Always the same ones, and always several. I install them, again and again, yet I am still always prompted to reinstall every time I start Firefox. I've always had this batch installed, but I don't know why it keeps telling me to reinstall them.

Some security software has virtualization or sandbox features that may cause problems by protecting and restoring files in the Firefox profile folder.
It is possible that there is a problem with the file(s) that store the extensions registry.
Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini, extensions.cache) and compatibility.ini in the Firefox profile folder to reset the extensions registry.
*https://support.mozilla.org/kb/Profiles
New files will be created when required.
See "Corrupt extension files":
*http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
*https://support.mozilla.org/kb/Unable+to+install+add-ons
If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to check if there is a compatibility update available.
If this hasn't helped then also try to delete the addons.sqlite file.
If you do not keep changes after a restart then also see:
*http://kb.mozillazine.org/Preferences_not_saved

Every time I start up Firefox, it checks for plugin updates. All my plugins are up to date, but it continues to load the plugin site. How do I make it stop?

Starting on Fri. 6/10/11, every time I start up Firefox 3.6.17, it loads the plugin update site. Initially, it said my Adobe reader plugin was out of date. Therefore I updated that plugin, yet that did not fix the problem. So I was finally forced to disable the plugin. After doing this, the plugin updates check still runs every time I start FF. However, they all come back up to date.
So my question is how do you make this plugin update check stop running. I had made no changes to firefox prior to this.

There's a fault with the blocklist.xml file which was updated on Friday, it should be fixed on Monday and you should get the updated file on Monday or Tuesday.

Every time I start or close Firefox , Avira reports a malwaare problem.

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