Diễn đàn hỗ trợ Firefox

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 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?

EVERY time I try to access my e-mail through Firefox I instantly get this message: "Your session has expired. Please log in again". My provider is Time/Warner, and my internet access is working fine. Firefox is also working well except for this e-mail issue; I can access my stored bookmarks, etc., no problem. I can even access my Time Warner e-mail through another browser (Safari), so I know there is currently nothing wrong with the Time/Warner site's built-in e-mail engine. I have already tried reinstalling Firefox, including several different versions, to no avail. I've also tried "resetting" per your troubleshooting instructions, and restarting in Safe Mode. No success. This issue began suddenly a couple days ago—no warning. To my knowledge I have received no viruses or malware in recent months. Tech Support at Time/Warner tells me other customers are having this same problem lately. Suggestions? Thanks, Jeff

Given that v. 47.0.1 is the last one to be supported on 10.6.8, the answer given here:

https://support.mozilla.org/en-US/kb/firefox-osx#firefox:mac:fx45

doesn't make it clear whether if it is preferable, IN TERMS OF BEST POSSIBLE FUNCTIONALITY (not necessarily security), to use v. 48 and later ones, or v. 45.x.x.ESR until it runs out in 2017.

This in particular: "Note: Some Firefox features might not be available on ESR." has caught my attention. Is there a way to know which are those features that are not available?

Thanks,

Where is View Source? How can the source code of a website be viewed?

View Source used to be accessed via a drop-down menu, but no longer. Why?

I'm using Firefox 24.0.

Over the weekend, Yahoo has somehow been made my default homepage. When I go to Preferences and change it to my desired homepage, it only works for the next launch - then it reverts back to Yahoo. So I uninstalled Firefox and downloaded a new copy. Same thing, so apparently it's a moderation you have made to your browser.

I do not like this. If you don't tell me how to permanently remove Yahoo as my default page, and allow me to PERMANENTLY decide for myself what my default homepage is, I will stop using Firefox altogether, even if it until now has been my favorite browser.

I am on an iMac running OS X 10.6.8

I have my browser set to restore the previous session when I open Firefox, and new tabs to open blank. With these settings, I used to be able to open new windows and have my homepage load, while keeping the behaviors previously mentioned intact, but when I open a new window now, I get a blank page.

Is there any way to restore the previous behavior, or are all tabs now seen as the same now, whether they're opened as part of new windows or existing windows?

After I click View/Full Screen on the Firefox menu bar, I lose the main FF Menu bar. When I hit the esc key, the screen remains locked in full screen view mode. Then I have to reboot my computer to get back to the default FF menu and display mode.

Why doesn't the esc key work the way it works when I'm viewing videos in full screen mode?

When I try to go to my website, I get a blank screen and this message:

Method Not Implemented

GET to / not supported.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Can anyone help me fix this bug, please? Thanks!

When I open Firefox in a new tab, I would like to have it open to a page of my choice. Right now, it seems there is no way to change that, but previous versions had this feature, and I put my computer to "google.com" for example, so I could be ready to search, whenever I pressed "command-T" (for new tab.) Are we stuck on Yahoo, now, or whatever Firefox chooses for new tabs, or is there a way to change this?

When I point Firefox 4.0.1 to the Plugin Check page

<http://www.mozilla.com/en-US/plugincheck/>

It flags the following plugin as outdated:

Shockwave for Director Adobe Shockwave for Director Netscape plug-in, version 11.5.9

However, I have the latest version of Shockwave installed (11.5.9.620) installed. Reinstalling the plugin does not change how the Mozilla Firefox Plugin Check page sees that plugin.

I can access the below site with other web browsers, however, Firefox will not let me access it nor can I add an exception so that it will access it. If I can't access the web site, I have no reason to use Firefox at all. Can someone please help???

I am able to receive emails however, I cannot 'send' them. What happens when I hit send is it says 'Sending' but never stops - it just stays in 'sending' mode without ever completing the email. This just started today. I went ahead and reset my Firefox and it's still the same.

I just updated Firefox to version 15.0 on the Mac. Suddenly, all of my bookmark folders that are supposed to be in my Bookmarks Toolbar are no longer there, and the Toolbar won't let me put them back there. This is substantially non-optimal. I must say, I'm becoming less and less of a fan of Firefox with every passing update, which saddens me.

This is the message I receive when I try to download my music order from musicnotes.com: Sorry, this plugin requires that your browser run in 32-bit mode. To change the default startup mode of Firefox to 32-bit, click on the screen and select the menu item: "Show me the 'Application Info' window so I can set 32-bit mode myself" I don't know what screen they are referring to. How do I change the default startup mode to 32-bit? Leanne Norman

When I try to save an image to my Mac - I have the option of saving it to my Desktop, my Docs folder or a few others, but not to a specific folder for different things I'm saving. I can't scroll through my Documents folders for example and save it to one of them.

So i end up saving things to my Desktop and that soon gets out of hand.

How can I save to a specific folder, and a different one each time if I choose. I can do this in Safari, but prefer Firefox.

Thanks.