When I open Firefox I have to try several times because a Runtime Error with the program C:\Windows\System32\regsvr32.exe

when I open Firefox I have to try several times because a Runtime Error with the program C:\Windows\System32\regsvr32.exe

'''Try the Firefox Safe Mode''' to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.''
''(If you're not using it, switch to the Default theme.)''
* You can open the Firefox 4.0+ Safe Mode by holding the '''Shift''' key when you use the Firefox desktop or Start menu shortcut.
* Or use the Help menu item and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Don't select anything right now, just use "Continue in Safe Mode."''
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again.''
'''''If it is good in the Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one.
Please follow the [[Troubleshooting extensions and themes]] article for that.
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''

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All that comes up when I open Firefox are my toolbars and a place to enter a URL, but there is no window. I have to enter full screen mode to view websites.

Something happened with Firefox where all that comes up when I open Firefox are my toolbars and a place to enter a URL, but there is no window. I have to enter full screen mode to view websites. How do I get back to a regular browsing window? I have no idea how this even happened.

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.

When I open Firefox, I have lost my tool bar with my favorites, bookmarks, etc. How do I get them back?

When I open Firefox, I have lost my tool/task bar at the top of the page with my favorites, bookmarks, etc. How do I get them back?

Please read this article:
http://support.mozilla.com/en-US/kb/menu+bar+is+missing

Problem with this new version is when i open firefox something change my home page to mozila defalut page and in the new tab open mozila firefox first run page.Sorry for my bad English

Problem with this new version is when i open firefox something change my home page to mozila defalut page and in the new tab open mozila firefox first run page.Sorry for my bad English

Sounds like this issue:
* http://kb.mozillazine.org/Preferences_not_saved
* [[Preferences are not saved]]

Firefox freezes if I try to initiate a remote console session with the Netware 6.5 server I am connected to. I can force quit, re-initiate Firefox, re-authenticate and I'm able to successfully start a remote console session and acquire the server console.

Firefox freezes if I try to initiate a remote console session with the Netware 6.5 server I am connected to. I can force quit, re-initiate Firefox, re-authenticate and I'm able to successfully start a remote console session and acquire the server console.

Hi Mac Attack,
My computer will not disconnect from the internet. It seems to find a clone router and continues even when I shut down and unplug my my own home iy
Your main question was 'chopped' in the title. Please reply in the body of a reply box with the full question and anything you have tried. And no, the long report was not helpful .
If the same website is opening each time you launch a browser (Safari?) hold down the shift key as you launch to prevent previous pages from opening.
Have a look at your settings in Safari > Preferences. Especially General and Privacy.
Reset Safari to remove cookies and other stored data.
System Preferences > General
Have a look at your settings in System Preferences > Security & Privacy.
Call back with more questions.
Regards,
Ian

Just upgraded to 9.1.0 but my Bookmarks Toolbar doesn't display when I open Firefox (I have to untick then retick it each time in View- Toolbars)!

When I first open Firefox my Bookmarks Toolbar is missing (but it has created the space under the search bar for it). If I untick it then retick it in View->Toolbars it reappears for the session but then disappears again when I reopen Firefox.

Hi,
Please try the [https://support.mozilla.org/en-US/kb/Safe%20Mode Safe Mode] procedure. In the first screen enable (tick) '''Reset toolbars and controls''' and '''Make Changes and Restart'''.
Useful links:
[https://support.mozilla.com/en-US/kb/Options%20window All about Tools > Options]
[http://kb.mozillazine.org/About:config Going beyond Tools > Options - about:config]
[http://kb.mozillazine.org/About:config_entries about:config Entries]
[https://support.mozilla.com/en-US/kb/Page%20Info%20window Page Info] Tools (Alt + T) > Page Info, Right-click > View Page Info
[https://support.mozilla.com/en-US/kb/Keyboard%20shortcuts Keyboard Shortcuts]
[https://support.mozilla.com/en-US/kb/Viewing%20video%20in%20Firefox%20without%20a%20plugin Viewing Video without Plugins]
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]
[https://developer.mozilla.org/en/Command_Line_Options#Browser Firefox Commands]
[https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting Basic Troubleshooting]
[https://support.mozilla.com/en-US/kb/common-questions-after-upgrading-firefox-36 After Upgrading]
[https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]
[http://kb.mozillazine.org/Problematic_extensions Problematic Extensions]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins Troubleshooting Plugins]
[http://kb.mozillazine.org/Testing_plugins Testing Plugins]

When I open Firefox I get my homepage and immediately I get another tab with some site I have never been to. Is there a way I can block this?

Here is the address of the site, I never click on anything in it for fear of what it is:
http://testendonline/d/p2i1d22419
Any help would be greatly appreciated.
Thank You

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

Having trouble upgrading latest version of Firefox. Have attempted this several times and still getting message on main page that I do not have latest version. What do I need to do?

I have attempted to upgrade latest version from main Firefox page, but still have the message on main page that I need to upgrade, that I have not upgraded to latest version. What are the exact steps I need to execute in order to have the latest upgrade? I've clicked on the "upgrade" icon and it has taken me through the steps, but still tells me I'm not upgraded. Very frustrating.

Hey dogo1,
The latest version of Firefox is 9.0.1, so it looks like your updates have failed. You can look at the Knowledge Base article [[Updating Firefox]] for some troubleshooting steps. Alternatively, you might just want to try installing a fresh copy of the latest version of Firefox. I would look at the Knowledge Base article [[Backing up your information]] first. That way you'll have a backup of all your bookmarks and person information.
Then you should completely uninstall Firefox and then download a new copy from:
http://www.mozilla.org/firefox/new/
Hopefully this helps!

Firefox repeatedly has no bookmarks, no history and will not let me add bookmarks. I have fixed this several times (deleting some sqlite file), but the problem recurs. It's enough to make me give up on firefox. Using iMac with OSX.

This problem happens upon upgrades, but may have happened between upgrades as well (happened so much I've generally given up on using bookmarks or history with firefox).
Thanks!

When you don't have enough storage to perform an operation, then you don't have enough storage. have you got the 16GB iphone?

Why is there a blank tab when I open firefox when there wasn't one before?

When I open firefox, I have it set to only open ONE home page but for some reason, it opens that page and then a blank one. How do I get rid of the annoying blank tab that pops up with my home page now? It is extremely annoying. Thanks!

You can check the home page setting:
*Tools > Options > General > Startup: Home page
Firefox supports multiple home pages separated by '|' (pipe) symbols.
*https://support.mozilla.org/kb/How+to+set+the+home+page
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.
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

When I opened Firefox, Why cursor blinking in address bar?

When I opened Firefox, Why cursor blinking in address bar? It should be on the Google search box. so that i can start searching fastly without clicking on the search box of google.

Hi, you should receive suggestions in the address bar, so please go to Options (cog wheel) - in the 3-bar menu unless you've moved it, > Search tab, and make sure that 'Provide search suggestions' is ticked/checked. Also go to the Privacy tab (Location Bar), and tick/check your preferred options.

Firefox has trouble initiating, and when it finally does, every time I attempt to interact with the application it stops responding.

Firefox won’t initialize: I can open any program on my computer except for Firefox so it isn't that my computer is slow. It doesn't open at all no matter how long I wait. I've left the room and let the computer run before and it still wasn’t running when I came back. After a few clicks it finally it comes up, and I have to wait because I’ve clicked multiple times so of course it's going to open multiple times. When I'm online after successfully closing all but one Firefox window so that I don't crash my poor laptop, every time I attempt to interact with the program via clicking a link, opening a new tab, or typing something into the URL bar, the program freezes and goes into the not responding stage. Rarely, an unresponsive script message will pop up.

See:
* http://kb.mozillazine.org/Preferences_not_saved
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

C:\windows\system32\prevhost.exe error when adding files

When I attempt to add files to ITunes, I get the following C:\Windows\system32\prevhost.exe whic is a C++ runtime error. Therefore, I cannot add files this way. This is Windows 7 Home.

prevhost.exe is your Preview Handler Surrogate Host. It's a Windows OS file, so an sfc /scannow is worth a try with that:
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7

When I open firefox, it starts not on my homepage, but on a search page I've never willingly downloaded, and have uninstalled from my computer. Why?

Today, I've had quite some trouble with my computer. I think it was attacked by something sneaky, but I managed to stop it and fix everything. Everything but this one thing.
When I open the firefox browser, it does not automatically go to my homepage, despite having followed every instruction for this to happen. Instead, it opens in a search engine called "awesomehp" which I have, previously to this, never heard of, and never installed. WHen I click the "home"-button, it goes to my actual homepage, and everything is ok.
I have tried to uninstall this...."awesomehp" search engine, but it STILL shows up automatically when I open FireFox. Why? And this is even after I've reset FireFox to its default settings once.
Why does this happen, and what can I do to fix it?

Every now and then, you should run these programs 
Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
You can try these free programs to scan for malware, which work with your existing antivirus software:
* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
* [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware]
* [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility]
* [http://www.surfright.nl/en/hitmanpro/ Hitman Pro]
* [http://www.eset.com/us/online-scanner/ ESET Online Scanner]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
Did this fix your problems? Please report back to us!

Have Firefox & Bing and when I open Firefox I get Ref A and string of characters; then when I get to Bing, no toolbar with bookmarks, etc or way to access mail.

I made Bing my browser and it was working fine until today. When I open Firefox I get a message Ref A: and then a long string of characters. I click on the home icon and the string changes. After doing this several times I get the Bing search page. I do not get the Firefox start page with the tool bar that has my book marks, history etc. I cannot clear the cache if I cannot not get the history tab. If I go the the mozilla firefox program folder and open it, there is a tool bar but cannot clear recent history, etc. there. I do not have an administrator & password on my home desk top; it is just me. I tried to follow your suggestions, but they do not apply to my situation. I really don't know if this is a firefox or bing problem. I used google before bing and had no problems; just wanted to try bing.

Can you attach a screenshot?
*http://en.wikipedia.org/wiki/Screenshot
*https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem
Use a compressed image type like PNG or JPG to save the screenshot.
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 or otherwise make changes.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

When I open Firefox I have to try several times because a Runtime Error with the program C:\Windows\System32\regsvr32.exe

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