Firefox Support Forum

Today I updated my Firefox Developer Edition to version 89.0b2 and now I just can not look at this browser anymore, "Inspired new tab design" is taking too much space and now became largest and at the same time least information-dense panel in my entire desktop! I searched around the web for a bit in hopes that I will find a theme or an add-on that will revert this particular change but no luck. I really want to revert to old UI look (at least tabs bar), there should be default theme or option to get back to old style. After some investigation I found userChrome.css but don't really want to install it (maybe this is actually the way of doing this kind of styling). Please help me revert UI design to old one.

Ever since IE changed to tabs on top firefox coders followed like mindless automatons without any regard to/for Mozilla community and users. We are sick and tired of being ignored. We want/need tabs bellow address bar. Now, tell us how to simply get tabs below address bar or tell the coders to provide us with the option. And, we don’t care about any excuses as previously provided or outright ignored by them.

If I open two windows of Firefox, pin tabs in the first, close it and then close the second window, my tabs disappear. In order to use this feature one must work with only one instance of Firefox?

I 'refreshed' firefox as suggested. The guidance suggested that all my logins and passwords would be preserved but when I check the Logins and Passwords all have been cleared. I am now faced with the arduous task of resetting many many login credential. Poor advice from Mozilla.

I have been trying to watch Netflix on Firefox, I made some security changes and at first thought that I may have caused the problem, but now I see that the add-on just fails to install. It just keeps the notification that it is installing. Is there a way to fix this issue?

So the problem is that Firefox doesn't play any HTML5 content. Weirdly except for Youtube. Youtube works just fine. But every other Website shows errors. Even songsterr.com. I'm using latest Firefox 76.0.1 on a recent Ubuntu 20. 04 LTS installation. Usual troubleshooting like updates doesnt work because "sudo apt-get upgrade" doesn't find any updates. I tried the same websites in the latest version of Chromium and they work perfectly fine. I couldn't find a mistake in the firefox settings or something so I'm confused. Disabling Plugins didn't change anything and turning of tracking protection didn't either. What is the Problem here and how can I solve it?

Hey there, awesomes! I'd like to change my Firefox pdf viewer's background color (both sides of the pdf) to dark, currently it shows light gray (see `background_bg.png`). And here is effect I want it to look like (see screenshot from Chrome `wished_bg.png`). Thanks in advance (:

PS: I don't want to change my theme to dark. It seems I have to change my css, but I dunno which & how.

I am using a video conferencing site called "whereby.com". It works as expected for everything but screen sharing.

When attempting to share my screen, Firefox asks me if I'd like to allow "whereby.com" to see my screen (see attached screenshot). When clicking "Allow", I see the message in the second attached screenshot.

Firefox version - 73.0.1 Mac OS version - 10.15.3

The same error message appears regardless which of the options I select in the window where Firefox asks which window or screen to share.

Whereby doesn't have any info on this, and no search I've run has turned up anything that might give more info on the cause of, or possible solution to, the error saying screensharing could not start. Any suggestions would be greatly appreciated!

Let me know if there's anything more I need to share to help troubleshoot this.

Thanks, Dan

Just ran a search in the address bar and was taken to this "Firefox search contest 2020" page. Never happened before and I assume it's a scam, have checked my add-ons and plugins but I don't see anything suspicious. Is this something to be concerned about?

If helpful, the url for this page is: https://sweetrelxme16.live/2262313374/?utm_campaign=QPF8euu28II5lw7O2iHhCugVqK5RzfdNsTpLaMM91qY1&t=main9_f90c820c180a04261c8d0973930afd&f=1&fp=4e4lHv53VRFsZD7g8DH8cHoGoZqhKuVVuUJjMi0vd9MavAzv9Ra8r35cGpaMIxPQMRUMvVHb0l82DIdO3468J0I1IGraOutgrge%2Bq9NWJxSgTtCArhRG9wrtn5m01%2Bx0n3MmjZiSV6rdotDp1uZK3X%2FC73QNaXrVEwU6oP9mIPSfJK%2B9iUDEhYFO3CUB0gqNmsYjipzEBg99p%2B0M3CKQbwifntTBZHvPFeMpyKOWKE7SKgze%2FpKn5JZBWY3pSSBh4y1pXXC3eYKb2LhL2ZoH4%2BWQ9hbMgWcybfFg5BkLBtWg1kwuZsikClxevJtm60RKV7prd51JiGjLrzf%2FNTDqxdrpwU2A0t4hnMG%2FGjpBHkvqc7jsROicHRQJdXvl6Xw%2BK1B4QHr4OdFM%2BRtvtMIuVoWNw3847b%2Bz5EijdBw1lIcKWD54y5Ykl2UHIWkWE3GJ0k%2Boz0qwm%2Bjks2VWfUk1dLIjwzZZ67mP3%2BIlzBvpAGyhYi%2FWISpYwui97wQ8U53uQKjnBTYIz1WN5e6HZkKCRHJTfzo%2FYcUJhu%2Fk4HDS04VDapoV6VLpeDv4JHDFP3AcqH5EPLVv648vIOUc%2B27TQByyZx70ORGYyOztbMH6xU0v%2B%2FM6DLecFWnHAPkQ8X%2Fk1igvbBNx8cPPUGQOchdh9Y1Hc7nm%2F4mZ%2BHsCVI5oeT%2FX7TJ15lDFHvc7uVp7J61DCWuWlQdtwjhqXu7Ms0k45AQQwlDJe4XvNbuDOTcti8QfPQw0zMaHTsoH6KjWUiBG6Qlk5UE4apuslT%2BVS8%2FhGlqRo190rqmBhsp3GLn%2B%2FkX8eoNQBK5adrrme1vjyuDFwg3XB1E0E9FY5RGGQuCmS2NgJ5NY1epvc0bT8qUYVwoKESw3dxc0I8oaHXm8pjJotg8dJ9p18vFzQfENSQ1Lif%2FXLA3qsLDDGOeLC5KQwPTUDb%2Bbwt5MjbLFbi09eakKIqSw1T6jyb6AzUIbIYU9CobdiZXlqXR1faA65a%2Bb49rHlYpFMsmtVMGAZGJ6GRcpqgidhwUeEfDWptpsKYjjcWxDXhB3bu93CuigV8dR%2FobTpbwwGmyFCtClfyPoqFgQ57R83bMHQta0ufdOf5rN%2BN%2BUUcgassNy4H84lggSNKjX1Tfle8JYPE8P850TKT8zL0qRyVHs9cq5ng7k%2FQl3TB847FICfrcWLUcxAU5Ed5hGOBPMcjGbc1pABVRV9%2BIivKKTvd06vBei1U27t1QJnlPCRub9A1wI2MEwWlJijoNtXlXN1odzAUFPLHNLG%2B3OjI80qmpNeUJoxRmfUN%2B%2BohI9hbzBle58Ij9659u%2FRIvLRx5Cs96YiHAeFadW%2FDvWvDJh3TzYhc798ZMqiB4KIcFtttKF8siLLCWSmhOmvNl0xVlAZBjrv%2Bs7beWbDKa2

All things I try to download on Firefox are extremely slow compared to other apps like Steam, torrents and other apps. I get 90mb/s on the download speed checks, but when I try to download something on Firefox, it downloads at like, 120 KB/s.

Attached is a sample of how web pages display. These can either initially display this way or, as in this example, the page opened correctly, I stepped away for a few minutes and when I viewed the page again it looked like the example. I can have a page open and it is displaying correctly, then open a new tab and go to a different site and the text will look like the example.

I have cleared the cache, dumped all the cookies. Restarting the browser (I do this many times a day) will fix the current page but eventually another page will display like this.

I running version 84.0.2 64bit on a Mac Pro Mojave. I don't have this problem with other browsers like Chrome or Safari. I never see it on my Windows 10 system.

After updating to firefox 72 (maybe it was after 72.0.1 - I did not have time to check so fast) videos on youtube started stuttering. When I start video everything seems fine but after a while it starts microstuttering - image is twitching, movement of camera is not fluent.

It looks like it is related to all videos on youtube. I watch mostly 1080p 60fps and these most often cause this issue. Example video: https://youtu.be/1La4QzGeaaQ It is easy to observe it at 1:27 with camera movement and terrain being fluent or not. If I pause video and resume play after few minutes it seems fine for minute but then it starts being choppy again. It does not seem to be related to video quality. I had 0 dropped frames in yt stats. I found workaround - if I set media.wmf.vp9.enabled to false and restart browser with this setting set to false everything is fine. But when I set it to true (like it always was for me) problem starts to occur. However no matter what I set youtube still shows "codecs: vp09". I do not have this problem on microsoft edge. I never had this problem on firefox 71 and I did not add any new extensions since few weeks. It must be new firefox fault, not my hardware or configuration.

I need to install Firefox NEW on an XP laptop. I need the (newest) old version that will install on the XP downloaded to THIS (Windows 10) computer and "Sneaker-netted" to the XP. Then I presume I will be able to download the NEWEST version that will run under XP and do the upgrade. What I received was indistinguishable from the most current version, when I tried to get 43.0.1. Help?

I use Google Home page. Recently, some stupid "Try Searching For" drop down box opens every time I go to Search bar!! I've clicked off everything I can find in indexes. How do I get rid of this nuisance 'help'.

Today I've refreshed my Firefox and I'm aware that I'll loose all my add-ons/extensions/customization's, but the problem is I've lost all my passwords in my Firefox lockwise! Please help me. I need all my saved passwords ASAP.