Diễn đàn hỗ trợ Firefox

I do not like the search engine Bing - it posts nasty images automatically when I pull up my Mozilla Firefox. How can I remove it completely from showing up with Mozilla and if possible how do I make Google automatically be the search engine that accompanies Mozilla?

I have been using the Downloadhelper add-on for years on my laptop with no problem. I noticed about three days ago it was no longer working with any Youtube videos. The rotating icon is still working, and when I click on it, it still gives me the file type choices for downloading. However, after I click my choice, the green arrow shows the downloading process, but comes up '0 bytes' for every type of video.

I am not having problems downloading videos from other sites that I've used before, just Youtube.

Also, I am able to use Downloadhelper with Youtube on my other computer without a problem.

Can you please help? Thanks.

I'm trying to run an application that displays competitors' routes at an orienteering event. My problem is that Firefox blocks the Java applet. I get a window saying "Application Blocked by Security Settings. Your security settings have blocked an application from running with an insecure or expired jre."

I've tried looking at the Firefox help on "How to enable Java if it's been blocked", but that's no help. It talks about clicking on the red plug-in icon in the address bar, but there isn't a red plug-in icon in the address bar.

The application is from www.epoc.routegadget.co.uk. It worked when I used it last Sunday.

Help, please!

Usually when I go to search for something, I type directly into the address bar. Most of the time it'll automatically just perform a Google search. Recently, however, the search engine has been changing to Yahoo, which is god-awful. I've looked around on the internet for answers but the address bar search engine, as well as the actual search box next to the address bar, keep setting themselves to Yahoo.

What I've done so far: Every time it switches from Google to Yahoo, I open about:config. I search for Yahoo and these pop up: [IMG]http://i44.tinypic.com/2rc1gyg.png/IMG

The status of the items in bold say "user set," but I haven't set any of those. Usually I reset them all to default, sometimes I will change the 2nd, 4th, and 5th items to Google.

I've also gone through my search bar settings and deleted every search engine except Google (these include Yahoo, Bing, Wikipedia, Ebay, Amazon, etc.). However Yahoo will randomly pop up.

I don't know what's causing it. But it's getting really annoying.

If you know how to solve this once and for all, please help!

Thanks for reading!

Some HTML5 videos won't play in my Firefox browser.

This vine for example (https://vine.co/v/b3v5h3Piwt7) only shows up as a static image. I can click the mute/audio button though, but it won't play. When I look at the webconsole when I load the page then 2 javascript warnings show up, the first one say that the Mediasource [long url here] can't be encoded and another one says loading of all candidate sources failed. loading media paused.

I'm using Firefox 21.0 and I tried to run Firefox in safe mode with disabled add-ons, and I also tried to reinstall it, but without success.

Thanks in advance.

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.

Example : When I log into my Twitter account, two usernames appear when I type in the first letter of the usename. Firefox does not allow me to delete / remove the unwanted address ...

Everytime I try to download a "large" file Firefox keeps asking me:

Firefox needs your consent to download large files. Please click ALLOW to continue your transfer.

If you cannot see the request, please click on the icon next to the address bar.

I didn't have this kind of troubles before until the new version, I'm so frustrated that I'm really thinking to switch to Chrome instead.

And in case someone wonders, there isn't a request icon at ALL.

So a lot of pages are loading really slow like minutes, like youtube and hot.ee mail service and a lot more. It started to happen when i updated to 20.0. Looked up some suggestions and found that about:config network.http.keep-alive to false help. And so i did it and it worked, but next time i opened firefox again it was slow loading again, but keep-alive is false still, disabled all not nessecary plugins and extensions and i dont seem to find a solution. Been a firefox user for a long time and dont want to change my browser.

I was hoping there is a 64 bit version that runs with windows 7 64 bit. Please let me know as both of the pc's in my house run 64 bit win 7 and firefox version 20 32 bit. Thank you.

I have a laptop with a corrupt browser (Explorer) and I want to install Firebox. But, because the current browser won't launch I have no access to the download site.

Yesterday I noticed that my mouse wheel no longer scrolls from anywhere on a web page. On some pages it works well but not on others. It's almost as if it hits a blind spot and will no longer scroll. If I move the pointer onto the scroll bar, or near the margin, it usually works there. If I move to a different web page it may work differently. It seems as if the formatting of the page determines whether or not it will scroll. It was not like this two days ago. It's frustrating when you move the wheel and expect the page to scroll and it doesn't. If I restart FF in safe mode the mouse wheel scrolls properly.

My home page includes my Google search box. I would like each new tab to be the same as my home page when opened. Please can you tell me how this is done? Many thanks

Randomly when I turn on firefox, go to a new page or open a new tab I will either get a full blown pop up (Almost all of them are awful but one was actually a full TV episode which threw me for a loop. And it was to a show I actually like) or I will get a little tiny add or video in the bottom right hand corner. Most of the time, though HIGHLY annoying, I can just close it down. But when it pops up when I'm trying to watch something on Netflix I have to refresh the page in order for it to go away. I have popup-blocker on but I'm still getting popup and little ads like crazy. I've run virus and malware scans. But it doesn't find anything. I don't want to reinstall firefox if possible because I don't want to have to copy my 50 bookmarks....anything else I can do? Help?

After Upgrading to FireFox 21 my browser no longer can detect that I have the Citrix ICA Client installed and prompts me every time I attempt to launch an .ica file from the internet. Upon multiple installs of the ICA Client from the prompts including Uninstalling it completely then reinstalling it I ignored the prompt and tried to launch the .ica file. It will launch only 1 .ica window no matter how many .ica files I click on. (Firefox 20 would allow me to launch several citrix sessions at a time.) Also when the 1 citrix session is open if I minimize it or bring another program to the foreground the .ica window becomes black and is no longer usable since you can no longer see anything in that window. Is this a known issue?? Currently I have had to unistall version 21 and found a version 20.0.1 that Ive installed disabling the automatic updates.

I have been having issues with certain pages loading correctly but have not been able to resolve the issues. I also tried to create a screen shot to no avail apparently. It's is not with every website only some here and there. Sometimes if I navigate aware and come back to that page it can resolve the issues but more times than not it does not fix the problem. I can also use another web browser such as google chrome or firefox and not run into the same issue. The exact same page will load correctly and as expected. I appreciate your assistance in this matter and I have done some of the trouble shooting steps noted in the frequently asked questions and what you all have suggested to resolve the issue such as clearing the cache, etc but it does not seem to resolve the problem long term

In Internet Explorer, I have BACK and FORWARD arrows when searching the internet, such as in checking out a site like Walmart.com for a catalog item, but in Mozilla, I can't seem to go back to a previous page without losing the entire program. There MUST be a secret that I am missing..... Help!