Firefox Support Forum

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?

One feature at www.weather.com (Weather Channel) is their "weather in motion" feature which loads interactive weather radars. For some reason, this is not working on my Firefox browser. It works fine in Chrome and Edge. The weather.com website loads just fine but the radar data (overlay on a map) will not load. IT WORKS FINE IN SAFE MODE. So i tried to disable all of my plug-in's, extensions and hardware acceleration in Firefox in regular mode. Still doesn't work. I created a new profile. Still doesn't work. I disabled the tracker feature in Firefox on that web page. Still doesn't work. I uninstalled and reinstalled Adobe Flash. Still doesn't work. Any ideas???

Firefox version 82.0 64 bit Running Windows 10 Professional

Hi.

I love Firefox specifically because it lets me use Ctrl+Shift+N, i.e. reopen a closed window. I have this one window with several pinned tabs (Facebook etc.) and a few other open tabs (some reseach, YouTube etc.) where I keep things that I need to return to. I essentially NEVER close this window without reopening it, because it has the most important things I need. Sometimes I open a second/third window to work in (I had an online exam the other day, so I opened that and my materials in a separate window, so I can cycle through them more easily).

When I open this second window, sometimes I close my main window (it has quite a few tabs so it slows Firefox down). I then always reopen it using Ctrl+Shift+N and never had a problem. Well, I closed it now (then opened one or two other new windows), but when I wanted to reopen my main window back up, it just refused to. It's gone from "recently closed windows". Interestingly enough, at least two other windows I closed BEFORE it (one from yesterday, that I did unrelated googling in; the other was closed a couple minutes before the main window, it was an emoticon set that pops up from one forum) were possible to reopen, but not my main window. Now I can reopen just 3 windows, and I don't understand where they are (there used to be up to ~10 or so).

I want to know why I was able to reopen windows I closed long ago, but not the most recent one, and whether there is a way to fix this and get the main window back. I have effectively lost ~40 tabs that I had open (some research articles, pinned social media, some stuff I wanted to read etc.) that I can't even reopen unless I find them through my History (and hoo boy, that'd take a while).

Thanks for any info. Have a nice day.

SOLVED - EDIT: The amount of windows that can be reopened can be fixed as mentioned below. Lost window probably cannot be restored, sadly. EDIT 2: Actually it can be restored! See the answer to find out how. Both these lovely people gave me answers to my questions, kudos to both of them.

I was using Firefox in my computer and it was working fine. But after I migrated to windows 10 Os and installed Firefox, I am facing some issues with Firefox. First of all, the gmail.com page is not loading correctly (image added). Also some websites like geeksforgeeks and other websites are having trouble to show some images (mainly).

- what I tried doig previously. 1. Doing ctrl + shift + r on those pages 2. Uninstalling and reinstalling firefox with clearing firefox app data folder from windows computer. 3. Doing a refresh from help menu. 4. Tried running in safe mode. (disabling all extensions) 5. Clearing cache and data from firefox settings.

How how to show them perfectly. however they show good in chrome, but I want to use firefox. So a fix will be highly appreciated.

Hello,

On my website I have a button to download my book in EPUB format. You can see it here: https://imwithlorac.com/get-the-book/#downloads

In the other browsers the file is downloaded, but in Mozilla it opens directly in the browser and unless you have installed in Mozilla an EPUB reader, a page with the raw file opens which does not make any sense. It's the same with the MOBI format. On the other hand, with the PDF format the PDF book opens because Mozilla can open PDF files. What I want is that it doesn't open, but that it downloads when people click on the link.

Does anyone know how?

Thanks

Hello

i have been having an issue with my browser where when ever i close it logs me out of all the websites i have been logged in to. i have refreshed it and i have reinstalled it and i still have the same problem and its making it really hard to work. any input is really appreciated.

thank you.

When i try to access mail.com I get the mail.com access page but the button "login" does not work. If I use Chrome there is no problem. If I refresh Firefox everything works the first time and then reverts . This all started happening 1 week ago after years of no problems. has anybody any ideas?

Hello, last 2 week Mozilla Firefox hangs while opening new tabs

How i can resolve this issue ? I try to create new profile, reset Firefox without any success

We are using Thermal Printers on our shops to print tickets, everything was working great with Firefox 81.0.2 and still works, but with version 82.0 is not printing good, if have tried alot of settings but nothing works, I tried to change printer settings, Firefox setting for printing but the result is the same. In other side with 81.0.2 it works great.. Our clients wants to use Firefox 82.0 for their reasons but we can't make it work there.

Hi,

I have Firefox installed on my MacBook Air running OS X El Capitan.

Everytime I go to open Firefox I'm met with "Firefox is trying to install a new helper tool. Type your password to allow this".

Is this a bug or is there really something to install every time I log on?

Any help / advice appreciated

Nationwide has decided recently that my firefox is not up to date and got me to delete bookmarks, then delete the cache. and some thing to do with the browser. I may have to ask them again as I have deleted bookmarks and updated but they still don't accept me or say there is a problem. any idea what I need to do with my browser? Things have worked well for years but no more. And being put back to my tortuous login every time is driving me mental. Best regards, Don.

Not able to access specific site. Getting banner along top of page that reads "A web page is slowing down your browser. What would you like to do? Options given are 1. Stop it. 2. Wait. plus there is an x at the end of the script. selecting either option or using the x does not resolve access. The banner disappears but comes back in 5 seconds of so. the tech support at the site I am trying to access suggests a different browser which, from my experience is a pretty lazy piece of advice.

The "banner" can not be copied. I have disabled addons.

I refreshed my browser, and after refreshing it, my passwords and log-ins were NOT imported, and I can't even save the log in information manually. Never had this issue before, and I don't understand what I need to do. I have the "Old Firefox Data" on my desktop, but am totally confused about how to get that information into the refreshed browser. Not being able to re-enter the info, clicking "save", works. Help!

Only one Browser has problems with HD videos (1080p + above) on youtube: Firefox in the most current version.

I have tested so far only the one current latest version of the ESR branch (78.3.x). But as visible from thousands of articles to this very particular problem (when i search the community help database for "Youtube videos stutter" i get multiple thousands of entries - i read only a handful of them to realize that they are all "closed" and not a single one "solved"), this problem persists since multiple years now.

I have a very old PC by my side with a very old Firefox (benchmark wise slower than my current PC by a factor of at least 3) ESR 52.9, which is able to play the same videos in the same HD resolution without the slightest stutter.

The drivers on that old system are - naturally - outdated by half a decade. THAT OLD OUTDATED system with THAT OLD OUTDATED Firefox is well able to play even multiple HD videos side by side. With-OUT any stutter.

Thus, you can easily deduce by logical reasoning that nighter any outdating of drivers whatsoever nor any outdating of anything else on the system, be it hardware wise or software wise, CAN AT ALL be the culprit of that stuttering.

While the former holds true, what you actually find in the communities help are completely useless and irrational tips of "upgrading the browser to the last version", "upgrading drivers" or "reinstalling any software" or the like.

Let me be clear: Nothing of the latter will ever help in overcoming the stuttering of current firefoxes at all. The only one measure that will help here is to revise the code that is underlying the video pipe.

Since the stuttering regularly only begins after about one to two minutes into the videos, it is strongly suggestive that something in the memory management - probably in the way resources becoming freed after use - is accumulating over time until the stuttering begins. Badly managed garbage collection, perhaps?

Hi,

Tried to find the solution but the problem boggles me.

I'm using the latest version of Firefox on Windows 10 (2004). Using one Windows session (let's call it WS1), my profiles (even new ones) are extremely slow, as if I had a really bad Internet connection (but responds well to typing or opening new tabs or operating in general, just slow navigation). I have a backup browser, Opera, that works just fine. On another Windows session (WS2), Firefox works just fine, even with the profiles from WS1.

Safe mode doesn't resolve anything.

It can't be a driver problem, as it's the same PC, shouldn't be a software problem, same reason, and both sessions are built pretty much the same way.

I tried uninstalling Firefox, using Windows Disk Cleanup as per this solution https://support.mozilla.org/en-US/questions/1219670 then reinstalling it again and no change.

I can't use the other Windows session as it's not mine, and I can't create a new one either.

Any help is greatly appreciated.

Edit: I was finally allowed a new Win session and the problem disappeared. Can't delete the question though.

Firefox will not display some web pages.

I have found two so far.

https://webapp.simplisafe.com/

https://www.redrivercatalog.com/empty-rr-boxes.html

Dave

A week ago I started getting errors while reading emails and trying to open/download attachments like PDF's and Word files. I get an OWA 500 error.

I share my machine with my wife and if I go into her account, use the same version of FireFox and the same Outlook.live.com for email and try to open the same attachments for the same emails, I DO NOT get the same errors. Any help would be appreciated. Thanks

I get Subject Error page upon initial launch. I tried the going to about:config and confirming the browser.sessionstore.max_resumed_crashes was set to 1. I also made sure I Quit FF before shutdown. (No FF tasks in Task manager) Neither of these worked for me. Running the current version of Windows 10.