منتدى دعم ”Firefox“

Videos on Twitter don't play, "The message This browser does not support video playback." appears on the center of a screenshot of the video. Twitter Videos play normally on Chrome. YouTube videos play normally on Firefox.

I have the latest version of Firefox and all the plugins are up to date (Java, Flash Player etc). I have experimented changing Hardware Acceleration Where Available box, the media.windows-media-foundation.enabled attribute, clearing the caches, opening in safe mode, nothing makes the videos play.

Is there anyone who has had the same problem and managed to solve it. Thank you.

Yesterday, after restarting my computer when trying to launch firefox i received an option "start in safe mode or refresh". I refreshed and now anytime i search Yahoo.com the home page is missing files. I've tried to search for answers and haven't found anything that seems to work. Attached below are images of Yahoo.com and the sign in for yahoo mail. Any help or suggestions would really be nice. Thanks in advance!

On two different profiles, the Customize option simply isn't working. I see three different places on the GUI to click on Customize, and none works. Nothing happens when I click on them, beyond the letters "Customize" appearing at the top of a tab.

After appearing earlier this evening, the LastPass icon is also failing to appear on both profiles.

https://input.mozilla.org/en-US/feedback/firefox/40.0/#moreinfo

does not load. I can enter the info/feedback but when I click submit, I get a blank page.

for example, this page will not load:

http://www.allmusic.com/artist/rick-astley-mn0000354722/songs but the page that links to it: http://www.allmusic.com/artist/MN0000354722/biography

loads just fine.

Videos from YouTube I've embedded in a couple of web sites will not go fullscreen. I can go full screen on the same videos when on the YouTube site with no problem. On my embedded video the fullscreen control is there in the bottom right corner but I get the message "Full screen unavailable. Learn more." The source of the video is not blocking fullscreen ("allowfullscreen></iframe>" is included in the code), I've checked all my permissions, specifically for the web sites in question even, as well as my Add-Ons (I changed them all to 'Always Ask' in case some new one or update was bugging things up). What am I missing?

I installed addons (e.g. adblock lite, ad killer) and when I shutdown Windows and start it again, the addons disappeared in Firefox. I'm using Firefox 40.0.3 non of addons will stay. I restored Firefox to its original state, installed everything again, also did the Malware scan as suggested on a post and the problem stays. So every time I start Firefox, have to install the add ons which is a bit hectic.

Please help me with some solution.

I use to browse on a site called www.Old-Games.com. Before it used to show a clicked linked with dotted lines around, now it does not??? How to bring this back?

The puzzle website http://pl.puzzle-bridges.com/ (this is only a part of the website, there are "sub-sites" for different puzzles) is not working right. Yesterday it was OK. The problem may be related to Firefox update because it's the only things that changed. Basically: I can't solve any puzzles because they don't react to my mouse. I can click "restart" or "new puzzle", but when I click the game field, nothing happens at all - no line/dot/whatsoever appears where I click. My current Firefox version is 40.0.2. I just love the Shikaku puzzles. There is a extra large 30x40 puzzle every week. I have already solved this week's extra puzzle, a new one will appear tomorrow. So please help me solve my problem before the end of next week because I would be just inconsolable if I was left unable to even try solving this puzzle...

for the past few weeks Firefox has been really hard to Copy & Paste text from one page to another, then editing the text is impossible - I can paste lines of text but only one goes in the box - then when I try to edit or manipulate the text it just screws up :/

It does not matter if I use context menus or Keyboard commands to copy & paste (CTRL C& V)

I've been using Firefox for about 10 years and NEVER had this issue - I have tried the stuff in ABOUT:CONFIG CONTEXT and even in SAFE MODE the issue exists :/

I tried to screen record the fault but that's pointless because you cant see that my key presses are being totally ignored in the text box - all you would hear is me swearing the computer

Anyone else having this issue?

WTH is happening

I don't want to switch browsers as all my devices sync but this is getting really bad and makes working on my business blog virtually impossible.

Been in I.T. for 28 years and never seen anything like this before!

I recently updated my site's hosting plan in Adobe Business Catalyst and now Firefox is showing the tablet version of the site instead of the desktop version.

Both IE and Chrome are functioning correctly. The monitor I'm on is a 19" 1440 X 900 display.

It used to not do this, and I'm unsure what happened.

Firefox 40.0.2 crashes or freezes dozens of times a day. There are too many crashes to list, and they aren't picked up by Mozilla's servers anymore.

I am using Windows XP, though sometimes Firefox crashes on Windows 7 as well.

My extensions and plugins are:

• McAfee Virtual Technician
• DivX VOD Helper
• OpenH264 Video Codec
• Adobe Acrobat
• Java Deployment Toolkit
• FEBE

I also used SuperAntiSpyware, a virus scan tool that my mom recommended, and it also removed critical data from the Crash Reporter. A year ago, I also deleted critical add-ons that made Firefox stable; I was not fully awake at the time so I cannot remember what the add-ons/plugins were.

After recovering files to my C drive from Sandboxie (virtual browser) Firefox no longer shows my bookmarks and history. I see the places.sqlite file and others in the profile folder. I can't import because I only seem to have a backup from last month and it's a jsonlz4 file. The places.sqlite file is 10M so I know it has all the data I need but how do I get it to load into Firefox?

FYI, Sandboxie is a virtual browser so as bookmarks are added inside Firefox the file is saved in a virtual space. You have to "recover" said files to make them copy to the C drive. I did that before I cleaned out the Sandboxie (which needs to be done periodically to clean out malware and other junk). I then restarted Firefox after doing this and apparently it was referencing another file (that didn't get recovered) when it loaded my bookmarks.

Firefox used to give me a pop up window that asked whether I wanted to allow, block, or allow for session whenever I visited a new website and dealt with cookies accordingly. It also added the resulting choices to an exceptions file. I upgraded to Firefox 40.0.2 and no longer get the choice window. I use Windows XP pro.

Now Firefox seems to allow all cookies of whatever origin. The websites do NOT show up in the exceptions page. The exceptions page has a place at the top to type in individual websites. Will I have to type in the address of every website on the internet that I visit? Can I get the old system with the pop up window of choices back? Please help as I have found no way to either control the cookies or prevent every website and their links to put cookies on my computer.

Thank you for your help with this frustrating problem.

Firefox opens fine to home page of MSN and works fine for Facebook. Crashes when attempting to play Farmville. We had a loading issue for a while and Zynga instructed me to change something in Firefox (forgot what it was). Worked fine for a few days but now crashes constantly. Have uninstalled and re-installed Firefox but did not work.

Upgraded to Firefox 4. Norton Identity Safe is disabled. When will this be updated/verified signed. This is becoming immensely frustrating as the problem does not occur when using other browsers.

So I recently exported my bookmarks, put them on a external hard drive, then re-installed Windows. Windows was getting slow, my anit-malware software wasn't fixing it, so I performed a re-installation. Which I've done before without any problems. I then re-installed Firefox and imported my bookmarks back into Firefox. But this time not all of them returned. I only got about 1/2 of them. I tried Importing again and this time I got some of the ones that were missing the first time, but it still didn't contain all of them. The 2nd import didn't have all of the same folders as the first either, which were placed below the 1st import. So now my bookmarks are jumbled and I'm still missing a 1/4 of them. Most of the bookmarks that I still can't recover were in the Unsorted Bookmarks section if that helps at all. But there may be many more missing. I can't tell... as it would take me a long time to check, as I had many bookmarks and without a copy of the original list I would struggle to remember them all. I looked through the Bookmarks HTML file and still don't see all of the websites that I know were originally there. In fact it just looks like a copy of the 2nd Import that I got. So I don't even know what happened to the websites I got from the 1st import? Where did THEY go?

Can anyone help? I am very confused. I don't know where I went wrong (Exporting, Re-Installing, Importing etc)

I would like to recover all of my Bookmarks if possible. But also figure out what happened, and how to prevent it. So this doesn't happen again to me or other Firefox users.

Thanks you

Hello,

I am having some issues using any google related websites. Sometimes when I try to perform a search on google, or load a video on youtube, it simply wont load anything. At first I tought I had internet issues, but I dont not. As soon as Firefox wont load Youtube or perform a search on google, if I try this at Chrome I can do it with no problems. So the problem is in Firefox, since at Chrome and IE there are no issues at all.

I have all my plugins updated on Firefox. Anyone could help me regarding this issue?

I have 3 PC's that have all been upgraded to W10, and all 3 have FF as their default browser (2 PC's home built the other is a Samsung Series 7). On all 3 of these PC's FF hangs for no reason, and even more baffling they all seem to hang at around the same time. Most often I will minimize FF and walk away from the PC only to come back later and not be able to access FF. When that happens the FF window is almost slightly blurry and the only buttons available in the window are minimize and close.

Yesterday I updated 2 of the PC's to FF 40.0.3 but FF still hung in less than 24 hours. The other PC is running FF 28. The only thing these 3 PC's have in common is that they've all been upgraded to W10 and they share some of the same add-ons. Any suggestions on troubleshooting this? I did try disabling Flash but that did not resolve the issue.

For some reason, I don't know why this happens only with FireFox or WaterFox. On IE/MS Edge or Chrome this doesn't happen. What could be causing this and please help me fix this? Thanks