Firefox Community Forum

Trying to watch a video on Nebula and it will not load. Receiving the following errors:

NS_BINDING_ABORTED Media resource https://nebula.tv/static/small-video-h265-DaPPbwJq.mp4 could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_NOT_SUPPORTED_ERR (0x806e0003) Details: Utility MF Media Engine CDM only support for media engine playback

Just made a new profile and wiped everything from my history following another issue which isn't strictly speaking resolved. I am unable to load image-dense websites with any consistency. Issues do not occur on other browsers. I receive similar errors on Twitch:

The resource at “https://assets.twitch.tv/config/settings.1c614f361eb0408365c5a3fce34f6bf7.js” preloaded with link preload was not used within a few seconds. Make sure all attributes of the preload tag are set correctly. www.twitch.tv The resource at “https://assets.twitch.tv/eppo/api/flag-config/v1/config?sdkName=js-sdk-client&sdkVersion=3.1.2&apiKey=3mv-BKCSZJDyZrwfqK86har6u13NgxRh.ZWg9bTRsZHJnLmUuZXBwby5jbG91ZCZjcz1tNGxkcmc&callback=__setEppoConfig” preloaded with link preload was not used within a few seconds. Make sure all attributes of the preload tag are set correctly.

"Recent changes in how some corporate web sites react to FireFox such as not show the header menues and other function reduction in the last three weeks. YET Chrome and google still function like normal. Is this an attack on Linux supported browsers? " I contacted United Health Care (UHC) regarding their menu disappearance and treated it like error on my end until I discussed doing their recommend fixes and the only ones that worked are going to other Google or Micro-Soft supported browsers. FireFox was working fine until three weeks ago. What's up, is it FireFox or UHC?

So I just upgraded my pc and it bricked my windows and to reinstall, I forgot to save the Firefox data before doing so because I thought it wouldn't cause any issue, well, now all my bookmarks etc. are gone and I'm wondering if there is some sort of backup somewhere saved by Mozilla in the cloud.

I'm aware that Firefox VPN comes with a 50 GB/month data limit. Having used it recently, I'm not finding anything that indicates how much data I have left for the month, and I haven't found anything pertaining to this under Settings or the FAQ.

After last mac update i have not been able to get onto my Farmille2 game ive been using firefox on my macbook air no matter what I have tried hasn't worked going directly to zynga just brings up chrome info which doesnt work can you please help ?

Recent builds have changed the way that the user can direct queries to the various search engines that can be added (i.e. eBay, Wikipedia, IMDB etc) - to a new configuration that is awkward and forces more clicks.

Here is the method that currently allows reverting to the previous approach :

in about:config

Set string "browser.search.widget.new: to false

... and to delay automatic deletion of engines set "browser.search.widget.removeAfterDaysUnused" to thousands

from this Reddit thread https://www.reddit.com/r/firefox/comments/1rftet4/comment/o7s1w69/

Posting this for increased visibility for folks encountering the issue and in the hopes that Mozilla will consider not degrading a well-performing interaction pattern

I open Firefox, my browser, then I type in the site I want to open. It opens fine, however, when I try to open another site I want to open nothing happens except a little dot in front of the requested site keeps going back and forth, but nothing opens. I then have to close the browser, re-open the browser and key in the site I want. WHY? What am I doing wrong. Please keep in mind that I am not a computer savvy person and don't understand much about them. I do know however that Firefox used to work on my computer before update 150 and 151 were downloaded without a hitch. I have tried everything I could think of to fix the problem without success. I am beyond frustrated and need this fixed.

I've suddenly had an issue crop up when trying to access Twitter on Firefox. I get an error message that says "Firefox’s Enhanced Tracking Protection (Strict Mode) is known to cause issues on x.com", but the problem is Im not using Strict Mode. I have standard protection on.

I saved and closed a few tab groups about a month ago and now they're no where to be seen. Nothing is in the down arrow on the right and I don't see any groups searching through history. The text when I closed them said I could re-open them at any time. Where are they?

I have always accessed my LinkedIn account on Firefox. Suddenly today, my PW does not work, and my email address for PW reset does not return a PW reset link. Cleared cache without success. I can access LinkedIn on Chrome. Can you suggest what I have done to my Firefox to cause this? Thanks!

How do I get to - "Usernames and passwords are not saved" ? ? - it does Not say - Passwords in settings - so how do I get there ? I need to SAVE my gmail log in password so I don't have to keep typing it in to OPEN gmail and to subscribe to videos  ! BandOfLife@gmail.com July 19 2026

Firefox updated and all of my tabs I had open are gone. I used those for organizing and remembering things. There's no option to open recently closed windows. No history of the tabs as a group. What do I do?