Firefox Support Forum

Hello, can you add better support playback on .mp4 videos? Seems with Firefox it's a hit-and-miss with some .mp4 videos that will play and some that will just show "No video with supported format and MIME type found".

All other browsers will play .mp4 videos without an issue but Firefox won't.

If you can provide better .mp4 playback support that would be greatly appreciated. Thanks

Here's one of those videos for an example: https://drive.google.com/drive/folders/1Fv6SdftiCXeYPQOdF17H2JNpwjMu9P7q

Pretty much a URL string like example.com/videosample.mp4

I did a 'refresh' of my browser, thinking that basic user information would be saved. But I lost all my tabs in OneTab (extension). Is it possible to recover them?

Good morning I would like to ask how to configure (set) the Firefox browser on a computer with Windows 10 so that when clearing cookies and history, cookies and login data that have been added to exceptions are not cleared (deleted) when closing the browser: How this setting should be done (what options are selected) Privacy and security - clearing history when closing the browser Privacy and security - deletion of cookies and site data on closing (exceptions - allow) Please reply Regards Zbigniew M zbigniew14@gmail.com

I can no longer request further information on sites where it is possible to click and the result will be displayed. For example: I read a national newspaper on-line. After reading the article I then have the option of reading subscriber comments. When the button is pressed page says it is loading - but nothing happens. If I then switch to Edge - no problem. So I guess the problem does not lay with the newspaper. Many thanks for your help.

I am trying to migrate from a very old version of Firefox (v. 55) to the current one, but there is an app that is more helpful to me that all the other features combined. That is the "Tab Grouping" app that will not run in any version of FF higher than v. 55.

In my work, which often includes a tremendous amount of research, I need to be able to quickly go from one group of tabs to another. If I had to open all these sites manually, that would take the better part of the day and frankly I don't have near the mental capacity to remember the tremendous number of tabs. I have had a couple replies (Thanks!) to this question sometime back, but unfortunately none were even close in performance.

So, can anyone direct me to an app that will allow very quick movement from different sets of windows/tab groups (please see screen shots below)? Is there anyway that I can get this app to work in Legacy mode? I have several other old apps that work perfectly well in this mode.

Oddball minor problem I've encountered on a recent update of Firefox, but also I switched keyboards at the same time, so I'm not sure which causing the problem. I'm on a PC, using an MSI keyboard. Ctrl and Shift keys all work, the ONLY combination that doesn't work is (left) Ctrl + (left)Shift + P. Other Ctrl + Shift key combinations work. If I hold the right Ctrl and either shift, P works fine. If I hold the right Ctrl and the right Shift, P works fine. (left) Ctrl + (left)Shift + any other key shortcut in Firefox or elsewhere works, it's ONLY the P shortcut and only in Firefox and only with the left two ctrl+shift combo that doesn't work.

Any ideas on what is causing this and how to fix it?

Does anyone out there know of a replacement for the Tab Groups replacement app? I have not updated Firefox past the v.55 only because I don't think it would work w/ any newer versions. I have found this to be the very best app I have ever used as I need to do a lot of research online and need something that will show all the windows and tabs on one page so I can easily go back and forth to a particular group quickly. Without this, I would have to spend hours finding the info and would only have one window in which to work. Ideally, a replacement would be able to use all the window/tab info I now have. Is there some way I could use this in some sort of legacy mode? I have several legacy apps, but can't readily recall how to do so. I think I tried this w/ the Tab Groups app and it didn't work, but am not certain. Suggestions much appreciated! Thanks, Wolfgang

My online pharmacy, connected to HumanaCenterWell, no longer opens in Firefox. A message "forgerock, redirect_uri_mismatch" appears. It did work until a few months ago and it does work on Google.

I was recently on Reddit and when I went to post a comment I noticed that it went to a user name called Far_Sheepherder_104 ,but they were using my email address , it also showed me that the account was using a Galaxy s20 & I don't have that type of phone and I never have had an s20. Can you please advise me on what I need to do.

Whenever I open Firefox on Chrome OS, which I installed via the Linux shell terminal, it says in settings that the browser is managed by my organization. However, I don't have a school account signed in or anything.

I have Firefox set to ask me where to download files that I want to download. It works for normal download links, but when I'm using my credit card company site's PDF viewer to look at a statement and I click on the download icon or link in the upper-left, it simply downloads the PDF (to my chosen "Save files to" folder in Settings). Is there a current way to change this behavior? Is this something that the website's code determines, overriding my Firefox setting?

This happens with multiple sites, so it is a Firefox BUG issue.

1. 1 - When I go to login at "office.com/setup" I try to set up a new account because I don't recall my login.
2. 2 - I type in my login name, example: "email@domain.com"
3. 3 - Surprisingly it says choose another email, that one is in use.
4. 4 - SO, I go back out and try again only THIS time I try logging in with my email because it is ME, not a new person
5. 5 - Then it sends me to a NEW window to change my pwd.

I enter NEW pwd twice. It sends me back to the login page, I enter my new info and it sends me back to enter my NEWER password twice again. I fall for it and enter ANOTHER NEW PWD.

1. 6 - It sends me back out to login AGAIN, then it asks me to enter my NEW password twice again.
2. 7 - repeat #6 indefinitely

This has happened to me at my bank and Microsoft office download. These two companies are NOT related. But I am using Firefox both times. SUGGESTIONS??? My bank locked me out for too many attempts to get in. On and ON and ON and ON.

Can someone please alleviate my sudden sudden onset of paranoia and tell me that this is what I suspect it is? That it's just your standard dev tools any user would have, and that a company could configure in deployment to work phones. I exceeded my IT tech talk comfort-level about 32 words ago, and now I'm faking it. I'll try to project confidence.

I don't believe I've ever used InTune on any personal device, but I have on work phones in the past. I mention InTune only because the last time I did use it to load company apps onto a personal phone was in 2016, and it would feel pretty creepy if this had managed to migrate across several years and several organizations to land on my new phone. And, to be clear, I really didn't get uncomfortable until I saw the apps under Flagfox, with an IP tracker, etc. I have a couple exes who have psycho exes; the kind who manipulate their child into putting a keylogger on their ex-wife's machines.

Screenshots in order of rising alarm and intensity of goosebumps.

Thanks- Dave.

LoL... As soon as I hit Share Data, I see those apps bringing up my data to help you troubleshoot, thereby answering my question, but I'll post it anyway. Hopefully, someone gets a laugh out of it.

Similar issue to the other posters. Firefox doesn't support streaming from amazon, netflix, or disney+. I have windows 10, a PC, an updated version of the browser, DRM content is allowed, and my widevine plugin has been updated as of today (12/10/23). Disabling all of my extensions did nothing to help. I can stream on apps and other browsers. Please work on a fix soon, or let us know what to do. Thanks.

Currently, the width of the browser window is 958px, but why is there a left-right scroll on the YouTube page and a margin remains. I can't even erase it from the developer tool, is there any way to get rid of it? The scroll moves every time I pass YouTube time, and it's so uncomfortable.

Hi,

Ever since installing the latest Firefox update I can no longer access Microsoft Outlook - email. When I try I get the following in the search bar https://outlook.live.com/mail/0/. Then nothing

I can access my Onedrive account, no problem, but when I try to get to the email part I get the same search bar response. Then nothing.

Using MS Edge, no problem - all works fine.

I have cleared all temp i/net files, cookies etc

Any (simple!) ideas gratefully received

Thanks -

Jim

I have been using Simple Tab Groups (STG) for a long time now. I am curious if putting tabs into groups saves any resources, i.e. is only the open group using resources (CUP/RAM), or is STG purely organizational in that all the tabs still use the same amount of resources as if they weren't grouped? If it is the latter, do you know of an add-on that would save resources? Thanks