Diễn đàn hỗ trợ Firefox

Couple days ago I've received my new PC and migrated all important data from the old one using a special W8 tool. I've also installed Thunderbird and FF anew, and migrated their setting using tools recommended here (FF Sync + MozBackup). And suddenly I've lost a possibility to open any external link in FF now no matter the source (Thunderbird or any other piece of software). Now I have to copy and paste URLs manually. It's not the best solution. Old PC OS: Vista Business, new PC OS: W8.1. Thanks in advance.

Just recently gotten back into using Firefox. Have been using Chrome. Firefox has one thing that Chrome doesn't have. So I see a number of old Plugs Ins from back when. How do I delete them. I've set to Never Activate. After each Plug In shows RESEARCH. But I don't want to research...I want to delete the old ones. So where do I go from here?

When webpages are loading, or when I scroll down a page, sections of the page appear black. I can sometimes clear this black panel by rotating up and down, the mouse wheel.

I have tried switching off hardware acceleration. I have checked fonts colours (black fonts and white background) and all drivers are up to date.

I am running Windows 8.1 and FF 25.0.

I'll be browsing, and Firefox will shut down. It's usually when I click on something, but occasionally when I'm just looking at the screen. After the last crash, I reopened Firefox and all my tabs came back. This happens once a day, occasionally more. The sporadic frequency makes it hard to troubleshoot extensions.

Crash Report IDs bp-420fd7ff-aa6e-4cd5-85d2-4cb122131104 bp-b3bbea0c-8e6b-4ad0-bb61-661ae2130820 bp-aef166ed-f8d3-421d-8ace-9d3bb2130819

Thank you!

I am running Win. 8.1 and had no issues with FF 24. Since upgrading to FF 25, firefox will appear closed when i close the window but the process doesn't shutdown. I have to go into Task Manager to end the process. I can then launch it again.

If you use Data Syncing then this is attempted every time you start Firefox. If you also use a Master Password then it tries to sync your passwords every time you start Firefox too. This means that every time you start Firefox it asks you for the Master Password. This is incredibly irritating.

I realize that you need to sync at the beginning of a new session but would it be possible to delay the syncing of passwords until the user actually needs to use a password (i.e. the default behavior for using a Master Password without syncing). After all, it doesn't matter if the passwords are not synchronized if they are not being used. When a password is actually required then Master Password could be requested and the stored passwords could be synchronized if the correct Master Password is supplied.

I have 64 bit Windows 8.1. I have activated Lightbeam but I cannot see any data about the sites I have visited. It tells me I haven't visited any, which is not true. What should I do?

I recently downloaded FF 25.0 on a new computer (Samsung Series 9) and web pages don't render correctly though I used default settings and have same extensions (all in one sidebar and list it). I asked our tech person and he said "Your CSS isn't loading. Try clearing your cache and restarting your browser". This worked but now I find I have to repeatedly do it as many as a few times a day, with varied websites, and once it happens, all websites won't render correctly. I don't want to have to switch to chrome, please help! Here is a screenshot.

http://www.screencast.com/t/5GYJ7GE9Ed

The message appears in a box, with the heading called Security Warning. Then reads:

Do you want to run this application? An unsigned application from the location below is requesting permission to run. Locations: http://xxx.xx.xx.xxx Running unsigned applications like this will be blocked in a future release because it is potentially unsafe and a security risk. Select the box below, then click run to start the application.

The issue started yesterday on 11/8/13. I would click on a Youtube video and it will play perfectly throughout the entire length of the video. Once it is done however, when I click the replay button, the video returns to the 0:00 play mark, but the video won't play. I try moving it to the different intervals of the video, for example , maybe 1:20 mark or 2:24 mark, etc, and it'll just return to the 0:00 mark of the video and won't play at all. To test if this was a computer malfunction or just a Firefox one, I tried doing the same thing on my Internet Explorer browser, and Youtube works perfectly fine on it, replay or otherwise, so I narrowed it down to a Firefox issue on my computer. Is there a way to fix this issue?

Set cookie: no session=blahblahblah/blahblahblahjfbajvbaknvkbdkvjhbjkhsd Expires= today path=/ Set-cookie= set-cookie= Location= content length= 0 Date= This is what i am getting everytime i open websites

Firefox downloads the update, "Installs", and after that it says that I need to restart the firefox. I restart firefox, but it says that the partial update was not applied, and will download the complete file in order to update. After that, it restarts, and says there were problems to perform the update.

When I try to perform a fresh install it says extracting and then the program disappears and does nothing.

Please help.

Hello,

I have been having constant problems with Firefox and Windows 8. What will happen is that Firefox will lock up my entire computer piece by piece until I am unable to interact with anything, after 1 - 2 minutes, the system will work again. Checking event logs shows nothing. The system does not crash but simply slows everything down until no movement is possible then it works. I honestly do not know how to fix this and any advice from anyone will be helpful. Below is a list of everything that I have done. It will happen with one tab or multiple tabs. It will happen on ANY site.

Specs: Windows 8.1 Pro 64-Bit AMD FX 8120 CPU 16GB DDR3 1066 120GB SSD Boot Drive 6870 2GB Video Card

Completely reinstalled Windows. - One of the first applications (after drivers of course) was FF. Started happening almost immediately. Upgraded from Windows 8 to 8.1 - No Change Disabled HW acceleration - No change Enabled HW acceleration - No Change Changed Flash to click to enable - No change Updated BIOS - No Change Updated video card drivers - No Change Set FF to run as admin - No Change Disabled C State in my CPU - No Change Ran FF in comparability mode - No Change Updated sequentially to other FF versions - No Change

This is pretty infuriating when I am trying to work. I love FF and although I am OK using IE, and have no issues there.

Please help!

I have two Firefox profiles. I completely wiped history, cache and cookies on on and now I see that my flash cookies are gone from the other profile (for example my Flash games progress). I know that it's not a big issue to loose some flash game progress, but this can be potentially harmful for other flash content.