Firefox সহায়তা ফোরাম

I am trying to add an mp4 video to my website using the following code:

<video width="320" height="240" controls>
  <source src="images/###.mp4" type="video/mp4">
</video>

where ### is the name of the video file. I get the following error message:

"No video with supported format or MIME type found."

In the console the following is displayed:

"Media resource http://127.0.0.1:5502/images/###.mp4 could not be decoded. video.html All candidate resources failed to load. Media load paused. video.html Media resource http://127.0.0.1:5502/images/###.mp4 could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006)"

Runs just fine in Chrome and I have no pop-up blockers installed. Autoplay is set to be allowed for all websites.

Windows 11 version 23H2. Firefox version: 126.0 (64-bit)

As title- Cannot download for example webm format, but jpg is okay. cannot install any addon, theme or anything. DRM didnt install as well. i was trying reinstall, refreshing browser, rebooting.

I am getting "Secure Connection Failed", Ive seen literally hundereds of same error also exist here. Like most of default solution (which is below) did not work for me. My laptops time is correct, And I highly doubt reddit and most of internet has issue with its security certificates. And other browser works just fine. So What is my solution other than immigrating to new browser?

https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect?as=u&utm_source=inproduct

If I open a second tab on the screen it says the connection has crashed and keeps doing it if you try again. If you reset it resets Firefox including the other tab.

On Edge or other search engines I've been able to highlight, copy and past a web address where the pasted result is a clickable link to the website, but this doesn't work for Firefox. I have looked through the settings and other questions online, but found no solution, from what I can see people more often ask about the opposite issue to mine. Is this a limitation of the search engine or am I dumb?

I'm trying to import a password csv file generated by Roboform into firefox password editor. I've exported the csv file from Roboform but when I try to import to the Firefox password page I get: "Incorrect or missing column headers. Make sure the file includes columns for username, password and URL". The csv file does have column headings. Is there a way to do this?

My website is shown as insecure. If I open it with Chrome, it is okay. If my girlfriend opens it from her computer with firefox, it is okay too. What is wrong here?

I just uninstalled firefox for personal use at home (Still use it for work).

I tried to change now given chromium is about to be neutered with ad blockers etc.

This was my feedback - Extremely disappointed and non-functional profile option/s. Wanted to provide feedback that hopefully someone sees, as there is going to be a mass migration to FF soon and if they do NOT fix the below, people will give up fast.

"There is no basic multi profile support like in edge, chrome etc. which is shocking.

about:profiles is completely useless, because once you sign in with the same firefox account again, it just syncs to the same profile.

Firefox MUST have multiple profile support under 1 login, not combine them. The thought of having to sign up a completely separate second account/email for a second Firefox 'account' with a second 'mfa' token just to separate personal and work is ludicrous.

I want to sign in, pick my profile as personal / work and then it syncs my diff favourites, plugins etc. per profile for work or personal depending where I am, NOT SHARE them all on 1 login. This is not possible and a huge disappointment considering these features are considered basic in other browsers."

Until firefox does this, it is unusable for multi work/private profiles and signing up a second Firefox account is just silly.

When I open poges now I see often "Firefox darf diese eingebettete Seite nicht öffnen" maybe similar to "Firefox can't open the imbedded page"

I can't see my own music tracks posted on x.com! That's a kind of fraud! What are you doing? At SAP I have to use Edge on Linux already cause you are doing a very bad job! WTF is going on? Are you doing anything or just breaking things?

As the title says, it is very slow with Ublock Origin. I have refreshed Firefox and without Ublock it obviously works but I would like to keep the extension because it is the only one that works with Youtube Ads right now.

When you go into 'Manage Bookmarks' and click on 'Import/Backup Bookmarks' is there a way to clear out the list of files listed when you hover over 'Restore ->' which brings up the list of recent bookmark files that you have restored?

For months now I can't cut and paste if I use Firefox. I am not remotely interested is uninstalling a heap of adds in a vain attempt to fix the issue. I can use Google chrome and Wonderfox which don't suffer this issue. I fail to understand why Firefox is alone in this problem. I would switch to Wonderfox as a default but it only works on SSL sites. Please stop ignoring this issue and fix it. Running Windows 11 fully updated on an AMD cpu.

Hello,

I have the latest release of Firefox on windows 11.

When I try to access accesspeople.accessacloud.com, the site I use to see my work's rota, the website doesn't work and shows this message;

" 503 Service Unavailable No server is available to handle this request. "

This website works fine with Chrome, Opera, Edge, etc.

I have tried disabling all extensions, turing off tracking, as well as clearing the cookies and cache for the site and still no luck.

Please let me know if you know of any solutions.

Thanks

With these updates the way Firefox handles Outlook seems to get worse and worse. I don't have these problems if I switch to Edge. If I'm watching streamers on Twitch the streams pause while Outlook loads. It didn't used to do this. Something about that mail service is really hanging up the browser and it struggles more and more. There is always delay as it tries to load everything. The first email will take a while before it loads up. Sometimes if I close the tab and open a new one and try again it loads up faster. I've have all my cookies reset with this recent firefox update, everything got wiped for some reason, but getting them set up again doesn't help it. Clearing Cache hasn't helped it.

Images and graphical elements (even the checkmark or the confirm image at the bottom of this thread creation page) disappear when scrolling down. This started after today's update. I've tried creating a new profile, troubleshooting mode, disabling hardware acceleration, disabling dark reader, changing the windows override settings to NEVER - NONE OF IT WORKED!! I'm getting really ticked-off by this crap! Didn't have this problem until the newest "great" update!

I have been facing a very strange situation/bug (likely some addon breaking my Firefox) where I am not able to navigate/load certain sites and certain pages. Here are details:

What is working: 1. I can go to google, amazon, yahoo, and certain other websites home page, and type certain queries in the google.

What is not working: 1. I can't load Duckduckgo(dot)com, nor ddg(dot)gg 2. Though I can open Google(dot)com, but I can not search anything in Google. I can see autocompleted/suggested results in Google, but nothing happens when I click on those autocompleted/suggested queries (screenshot attached, see lower left corner, *.gstatic.com/*.google.com is loading forever). 3. I can't open any addons/extensions. For eg. Tab Session Manager, or even Bitwarden does not load when I click on it, except it shows a pixel on the right corner of addon button on Firefox Toolbar (screenshot attached for that pixel towards the right lower corner of the icon).

What I have tried already - 1. Firefox is up to date as of a few minutes ago. 2. Underlying OS is up-to-date as of a few minutes ago. 3. I have tried disabling all addons and it did fix the problem. 4. I tried changing theme (which was default black) to default, and it did not fix the problem. 5. Tried restarting PC and it did not solve the problem. 6. I tried troubleshooting mode and it DID fix the problem while I was in troubleshooting mode, at least sites were loading. But as I exited troubleshooting mode, addons started loading for a few seconds, and then once Firefox is loaded fully, I started experiencing the same problem. 7. Tried toggle HTTP3 enable/disable, which did not fix the problem. 8. Followed Firefox troubleshooting guides, it did not solve the problem (except troubleshooting mode). I tried disabling hardware acceleration and disabled any protection modes, DNS over HTTPs and other settings which might interfere in site loading - none of that worked.

My hypothesis so far - As I can access some sites on the internet, I have ruled out DNS issues and networking issues. I tried disabling all addons and it did not fix the issue (except when in troubleshooting mode) - which tells me addons are not necessarily a problem. However, I could not find what all things troubleshooting mode disables, and perhaps I should find that out. Could anyone please share any insights or your thoughts on what I might be missing? Firefox is my primary browser and a lot of my tasks are pending from over a day now. Any help is greatly appreciated! Thanks a lot!