Firefox Support Forum

TODAY, after updates, I discover the horrible Yahoo search engine has replaced Google. I have a link to Google search engine and I am using it but REALLY????? HOW, in simple english, can I get rid of Yahoo and reinstate Google as my search engine? THANK YOU SO MUCH.

I just installed a fresh windows xp on my pc and I'm using the latest FF 26.0,but from the start i cant get to some pages,like in youtube,some pages doesnt come up and i get the "This connection is untrusted" page,in the technical details it says "youtube.com uses an invalid security certificate,the certificate is not trusted because no issuer chain is provided.(Error code:sec_error_unknown_issuer). also when i open FF add-ons manager tab Extensions,Appearance,Plugins and Services are ok but the Get Add-ons tab is not working,i get the same page as i stated above with the same technical details (instead of youtube.com it's services.addons.mozilla.org) and same error. I've tried all solutions on the web and on this forum like reset FF, adjust time & date, using the "Skip cert error" add-on, deleting the cert8.db file, and so on - none of them helped me with this problem. If it helps i use Avast! antivirus and window firewall,no other software on that pc. I'm pretty clueless about what else i can do,any suggestion that might help? Thanks!

I have a machine that is not connected to the internet, but is connected to a network. I need a copy of the software that can install without having to download anything.

On CNN.com i get this error when trying to view video or when clicking on one of their tabs:

400 Bad Request Request Header Or Cookie Too Large nginx

Locked due to age. If you still have a problem, please start a new thread

Basically the Google redirect virus is caused by a trojan with rootkit capability, and so whenever I click on a link on Google, it redirects me to a completely unrelated site. I think I got it on there because of downloading pirated software (patches, cracks, keygens) to avoid paying: so stealing software didn't pay off :(

I know you guys aren't specialised in internet security, but can you help?

OK. I found an answer in a thread here but it is already closed. I have an additional question. The moderator said there: Quoting: Depending on what you want to do there are a couple of options.

If you want to replace the bookmarks on the other computer with the bookmarks from your desktop, use the method in this link to backup the bookmarks to a file and then restore them on the other computer - https://support.mozilla.com/kb/Backing+up+and+restoring+bookmarks

If you want to add the bookmarks from the desktop to those that already exist on the other computer, you need to export them to an HTML file, and import that file on the other computer. See these links for details:

   https://support.mozilla.com/kb/Exporting+bookmarks+to+an+HTML+file
   https://support.mozilla.com/kb/Importing+Bookmarks+from+an+HTML+File 

I want to do the second one - "add the bookmarks from the desktop to those that already exist on the other computer" The problem is that my Firefox is version 4.0. I read somewhere in the bookmarks topics that I should have done nothing before upgrading to version higher than 12. The thing is my computer is 8 years old and I have only 512 MB RAM. There is no way to upgrade more that v.4.0. My computer can not handle it.

Any suggestions? Can I export and import with v.4.0 safely?

June 2013: videos on websites start playing without my permission, how to stop this?

What I tried: I uninstalled Adobe Flash (disabling Flash add-on didn't work), existing "stop autoplay" add-ons are no longer working according to reviews, tried solution described in "How can I stop videos on websites from automatically playing?" (Type in the address bar: about:config Then search for: plugins.click_to_play Double click and it will be set to true) - doesn't stop videos from playing either. Sent feedback to FireFox about the issue.

From what I had read in reviews, this is not only about Flash: YouTube disabled add-ons and searches for anything that can play videos installed in Windows, including using HTML5 for this. Have no information how other websites do it.

How to stop this? Thank you.

I am trying to open a video file for my online class. When I click on the file, a gray box appears and reads "a plugin is needed to display this content". How do I get my computer to open the video. I have a MAC and zero knowledge of how to fix problems on it.

I have tried many of the method suggested by user but AVG Secure Search is unaffected or goes away but keeps coming back.

I don't understand how it only seems to affect people running Firefox and why Firefox seems to rely completely on forums and suggestions by users as to how to fix it. Why is there not an official Firefox answer to this problem that seems to be a problem for a very large number of Firefox users?

You Tube and other sites are not playing video on Firefox with Adobe Flash after latest update for both. Adobe Flash is working on other sites but not You tube and those sites that may have embedded You Tube videos, I'm not sure.

Adobe Flash does not crash and no error message is showing. All that shows is a dark screen for the Flash video. Right clicking the screen shows only a non-clickable 'Movie not loaded' and the clickable link to the Adobe home page.

I have spent an hour trying things as suggested for past problems similar to this but none have helped.

I have sent sad face letting you know what I think of the latest update because of this which says pretty much the same thing as I have said here.

I have no further info but if I had some input and queries form you I might be able to provide more.

Keep getting the error message below every time I start my computer:

Run DLL There was a problem starting C:\users\John\AppData\Local\Conduit\BackgroundContainer\BackgroundContainer.dll The specified module could not be found.

"Web Companion" has installed itself on my PC and keeps hijacking or changing my browser to Bing.. then keeps offering to fix it.. which it doesn't, sugestions please? Can I remove this programe? I can't find it in the list of programes Please help..,

I am using the latest updated version of Firefox on my MacBook. The MacBook has Snow Leopard OS with all updates installed. Recently I have been using a website to watch TV shows on the computer (http://http://streamallthis.me/). It has the nasty habit of opening tabs in the background while I watch the show. The site it always opens is http://http://www.putlocker.com/file/B119FD2BAC80777D . I have the prevent pop-up option checked but that doesn't stop it. Once it opened 61 tabs in the background. Sometimes it opens so many tabs so quickly that Firefox hangs. It even has frozen the computer while doing it's thing. I have checked and have no viruses or malware installed. I tested Safari also and it does the same thing there. Does anyone know a solution for this problem?

have a website for a FLVS course that within firefox we always get: a plugin is needed to display this content but are able to see the site fully in Chrome.

How do we find out what plug in to install in firefox to resolve this issue.

Whenever I visit a page that contains even the smallest of Flash objects, Firefox stops responding briefly and then a dialogue pops up to say that Shockwave Flash has crashed. I have tried all of the fixes I have found on other questions: I have reset Firefox, run it in Safe Mode, disabled all extensions, reinstalled both Firefox and Flash, downgraded both Firefox and Flash and turned off Flash's "Protective Mode" etc. The problem only seems to have come about after I upgraded to Firefox 20 yesterday if that is of any help. Flash also crashes on IE and doesn't work properly on Chrome (YouTube does not play sound for example). I have run out of ideas and I was wondering if anyone has anything that I could try. Thanks in advance for any answers!

I often need to duplicate a tab but I cannot do so quickly in Firefox. I can copy the link, open a new tab and paste the link, but a simple shortcut in the 'right click' menu of the tabs would be nice. IE8 has this feature (Ctrl+K).

My tech guy says my Firefox has been hijacked - I couldn't even get to your website. When I google something, no matter what I click on, it goes somewhere else. It even happened when I went to click open an email - a new tab opened with this awful thing in it. Oh, and another thing: when it takes you to the bad website, you can't click on the back button to get back to wherever it was you were. You have to close the entire tab.

This happened

Every time Firefox opened

== it might be a coincedence, but it started when I installed AVG and the yahoo toolbar came with it. I disabled it, but maybe

My old pc is not working but I have the hard drive and access to all my files. all I am trying to do is move all my settings for Firefox...bookmarks, passwords and settings, to my new machine. I cannot do the sync, I cannot do a backup and restore as my old machine is not working....just want to move the appropriate files. I have moved my old profile to my new desktop. Running Windows 7 on old and new. Thanks!