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No video with supported format and MIME type

Hi, I get a message "No video with supported format and MIME type" when I try to watch movies on my website : https://www.spiriferminerals.com/product,25270,produkt.… (read more)

Hi, I get a message "No video with supported format and MIME type" when I try to watch movies on my website : https://www.spiriferminerals.com/product,25270,produkt.html The same movie works on Chrome but not on Firefox. Can you help ? Thanks ! Joanna

Asked by amexia 8 minutes ago

Desktop Freezes when Opening Firefox or Interacting with Tab

When opening Firefox, the window shows a white screen indefinitely, and the cursor shows loading whenever it is held above it. During this period, the desktop and taskbar… (read more)

When opening Firefox, the window shows a white screen indefinitely, and the cursor shows loading whenever it is held above it. During this period, the desktop and taskbar of my computer freeze completely. There are no reactions to hovering my mouse over taskbar icons, clicking anywhere results in a loading cursor, and other windows are no longer usable either. This carries over through multiple desktops and monitor extensions. This is resolved with a couple presses of the Windows key on my keyboard, which after a couple of seconds, turns the entire screen black apart from the Firefox window and reloads the desktop and taskbar. Doing this makes them usable again, but when attempting to close, click and drag, or manage tabs on the window, all tabs on the window freeze, as well as the desktop and taskbar once again. This can be resolved with the Windows key just as before, but it is disruptive to general computer workflow. What's more, certain other application windows open on the screen, including the file explorer, will close between refreshes, making work with multiple windows more difficult.

I am running Firefox 128.0.3 (64 bit) on a Windows 11 computer. This issue began yesterday (August 2, 2024), but it supposedly fixed itself that afternoon and came back this morning. I run Firefox with automatic updates, so I am unsure if this correlates with a software update. Removing the add-ons I used did not resolve the issue, and I use three extensions that were downloaded months ago with zero detrimental effects. I have data for bookmarks and favorites transferred from my Google Chrome browser, which I've dropped in favor of Firefox roughly 6 months ago with no issues.

I have already tried Mozilla's recommended troubleshooting methods in order to resolve this issue permanently. I have restarted my computer multiple times. I cleared my browser history, cookies, and data, uninstalled and re-installed Firefox, and refreshed Firefox from the troubleshooting information page. All to no effect.

Asked by Riley Dennis 4 hours ago

Mouse clicks always selecting something.

Whenever I click my mouse somewhere blank on a webpage firefox will always select some text/image despite being nowhere close to it. This does not happen to me on chrome.… (read more)

Whenever I click my mouse somewhere blank on a webpage firefox will always select some text/image despite being nowhere close to it. This does not happen to me on chrome.

Asked by dgfdhhtrjgdvb 4 hours ago

Sign into Yahoo Account but Cannot make comments

PRIORITY:HIGH for those that are concerned! I created a specific Yahoo account so I could make comments on various News issues. I'm signed into that account and try to m… (read more)

PRIORITY:HIGH for those that are concerned! I created a specific Yahoo account so I could make comments on various News issues. I'm signed into that account and try to make a comment and it says something like or offers to sign in again where the comment is located. when i tick the sign in tab it goes back to the article as if I never signed in to post a comment. When I am actually signed into the Yahoo account where the article is located. Could be politics, music, etc. I cleared the cache, etc...still stuck in the mud. please help. Thank you. raphael

Asked by felix85 7 hours ago

Last reply by felix85 7 hours ago

Cannot access KLM website

Here is the information that I sent to my anti-virus program ESET - the tech expert there said it was a Firefox issue... Can anyone help me??? It seems the pages were bla… (read more)

Here is the information that I sent to my anti-virus program ESET - the tech expert there said it was a Firefox issue... Can anyone help me??? It seems the pages were blacklisted in May - Thanks! Susan Links to the pages that were unavailable: hxxps://www.klm.de/trip/overview/trip-details/24243506-d2b5-4aaa-af8e-cf5d4f61fd0a

hxxps://login.klm.com/login/gql/gql-login/revoke-session?client_id=4pm9rktn3a689dy6593r29vr&authFlow=redirect&source=blueweb&brand=kl&redirect_uri=https%3A%2F%2Fwww.klm.de%2Fendpoint%2Fv1%2Foauth%2Flogout%3Fredirect%3Dhttps%253A%252F%252Fwww.klm.de%252Ftrip%252Ftravel-party%252Fadvance-passenger-information%252F24243506-d2b5-4aaa-af8e-cf5d4f61fd0a%252F3%252Ftravel-documents%253Flowloa%253Dtrue

Info von Tools/Gefilterte Webseiten: Zeit;URL;Status;Ereignis;Anwendung;Benutzer;IP-Adresse;Hash 22.05.2024 22:26:49;hxxp://x2.c.lencr.org;Gesperrt;Interne Blacklist;C:\Windows\System32\svchost.exe;NT-AUTORITÄT\Netzwerkdienst;23.39.185.73;E4E3F6BBAD17B41A42687B3D75ADE4A10B0870EC

Message on the screen: Fehler: Gesicherte Verbindung fehlgeschlagen Beim Verbinden mit login.klm.com trat ein Fehler auf. 1. Die Website kann nicht angezeigt werden, da die Authentizität der erhaltenen Daten nicht verifiziert werden konnte. 2. Kontaktieren Sie bitte den Inhaber der Website, um ihn über dieses Problem zu informieren. Weitere Informationen…

Asked by sczvogel 7 hours ago

Unable to logon to website

I am unable to Logon to website https://members.cartridgecollectors.org/pages/home.php?login=true" using Firefox but if I switch to Microsoft Edge I can Logon straight aw… (read more)

I am unable to Logon to website https://members.cartridgecollectors.org/pages/home.php?login=true" using Firefox but if I switch to Microsoft Edge I can Logon straight away, what is the problem? I get this screen,

 members.cartridgecollectors.org

Verifying you are human. This may take a few seconds. members.cartridgecollectors.org needs to review the security of your connection before proceeding.


and I am unable to connect. If I switch to MS Edge it connects immediately

Asked by trevor.thompson62 14 hours ago

Can't open Firefox - it says it is already running and must be closed first

For 2 days now I have a big problem! Firefox froze, and I ended up closing it with the programme manager. When I wanted to reopen I got this: Firefox est déjà en cours d’… (read more)

For 2 days now I have a big problem! Firefox froze, and I ended up closing it with the programme manager. When I wanted to reopen I got this: Firefox est déjà en cours d’exécution mais ne répond pas. L’ancien processus Firefox doit être arrêté pour pouvoir ouvrir une nouvelle fenêtre. BUT - it refuses to close when I click on "close" (fermer).

I tried the programme manager - but Firefox isn't shown as being open.

I've made a back up of my profile. I can't delete parent.block ... I'm told "Firefox is running already" and I must close it. Every troubleshooting step comes to the same barrier to completing it! Almost all guide one from an open Firefox page - and I can't open Firefox! I can't "uninstall" for the same reason!

All my passwords are in Firefox - and I can't import them to Chrome without closing Firefox completely! I'm going mad - urgent need to access my passwords!

Asked by Evelyn B 1 day ago

Last reply by Evelyn B 15 hours ago

I can't specify download locations

When trying to download a Firefox update or a PDF file, instead of displaying a popup for specifying a download location only a small menu appears and the screen locks up… (read more)

When trying to download a Firefox update or a PDF file, instead of displaying a popup for specifying a download location only a small menu appears and the screen locks up. If I'm lucky I can unlock Firefox using the ESC key; otherwise I have to do a Force Quit. I've included screenshots showing what I'm seeing along with what I should see.

Asked by h6w88c7hn7 19 hours ago

History missing AND cannot make bookmark

I have a somewhat elderly version of Linux, which I cannot upgrade for a variety of reasons, using FF-55.0.3, which is "plugged in" to all the local audio-video libraries… (read more)

I have a somewhat elderly version of Linux, which I cannot upgrade for a variety of reasons, using FF-55.0.3, which is "plugged in" to all the local audio-video libraries, but also runs a current Mozilla-128.0.3 binary, which cannot access those libraries. I use both on a regulat basis. Recently "55" lost history tracking and cannot make new bookmarks (however old boolmarks are still present). How can i restore 55's ability to track history and make new bookmarks without losing what's there? Is there a relevant variable or two in about:config I can reset?

Asked by paul 1 day ago

Download location not working

I had to install to a new computer, Windows 10 Pro. I set the Download option to ask for where to save but Firefox is not giving choice. I have closed and re-opened Fire… (read more)

I had to install to a new computer, Windows 10 Pro. I set the Download option to ask for where to save but Firefox is not giving choice. I have closed and re-opened Firefox since changing setting 128.0.3 (64-bit)

Asked by Spike CO 1 day ago

I don't have AdBlocker but GOOGLE won't open when clicked 7/25/2024

Clicking on the GOOGLE search box in the address bar automatically opened it but since 7/25/2024, I have to type 1 character in the GOOGLE search box for it to open. What… (read more)

Clicking on the GOOGLE search box in the address bar automatically opened it but since 7/25/2024, I have to type 1 character in the GOOGLE search box for it to open. What's happened? I cleared all cookies, removed and then added GOOGLE search back in the address bar and I don't have AdBlocker Ultimate. I have adblocker for Youtube & FB along w/FBcontainer because w/o it it's a joke trying to watch anything. I tried the suggestions to disable but it didn't work. I have no idea why you're even suggesting not using an adblocker. That's been the #1 reason people have downloaded FF is because of the different, usable & functional adblockers. I started using NN; which turned into Mozilla; for that reason....adblocking/pop-up blocking features and add-ons. Since it's not the adblocker in my case, what next?

Asked by Sonny65 1 day ago

video stream dose nto load

Over a week ago my videos on Utube quit working. I click on video and it starts to load but it never does load and start. The rotating circle never stops. If I click… (read more)

Over a week ago my videos on Utube quit working. I click on video and it starts to load but it never does load and start. The rotating circle never stops. If I click on the progress bar the popup shows the frame of the video so the info is in the machine. I had problems with cloudflare but I finally got rid of that garbage. It did not help with the video problem. I am running Windows 11 on an HP Pavilion that is about year old. It has 32 g of ram and 500g of storage. Windows and Firefox are up to date. I have rebooted and refreshed Windows and uninstalled Firefox but that does not help. I have no other problems, Chrome and Edge do not have the problem. I have an old HP desktop that runs windows 11 (slowly) and Firefox runs U Tube videos on it with no problems.

Asked by jredburn 1 day ago

Firefox uses up all CPU and heats up the laptop if a page contains one anigif

This is pretty much the same as https://support.mozilla.org/en-US/questions/801343 back in Firefox 3.x → 4 times. I do recall having the same problem then, and disabling … (read more)

This is pretty much the same as https://support.mozilla.org/en-US/questions/801343 back in Firefox 3.x → 4 times. I do recall having the same problem then, and disabling hardware acceleration did fix it back then, but it no longer does.

I’m currently on 115.3 ESR, but I’ve observed this for a while in Quantum (I don’t recall seeing it on Gecko with HW accel disabled).

Asked by mirabilos 1 day ago

Last reply by mirabilos 1 day ago

double FF and FF private icons in the win 11 all apps lists

I noticed there are 2 FF and 2 FF private browsing icons in win 11 under "start", "all apps". I don't see a way to delete 1 of each. is there a reason they are there mayb… (read more)

I noticed there are 2 FF and 2 FF private browsing icons in win 11 under "start", "all apps". I don't see a way to delete 1 of each. is there a reason they are there maybe? I'd like to remove the 2 duplicates if not. thanks

Asked by Jason 1 day ago

Problems Loading Sites

I have been using Firefox for a long time and truly enjoy it. However, lately it has problems loading websites. It can delay for two or three minutes to load gmail, ci… (read more)

I have been using Firefox for a long time and truly enjoy it. However, lately it has problems loading websites. It can delay for two or three minutes to load gmail, citicards, Schwab, etc. I do not have the problem when I switch to Chrome. Therefore, it has to be something with Firefox. If this cannot be resolved I will switch, reluctantly, to Chrome.

Asked by John 1 day ago

Firefox Tabs Constantly / Randomly Crashing

I would love for someone to help point me in the right direction as to why my Firefox tabs are constantly crashing, especially on high memory usage websites like webmail … (read more)

I would love for someone to help point me in the right direction as to why my Firefox tabs are constantly crashing, especially on high memory usage websites like webmail or youtube.

I'm wondering if it could be related to a potentially faulty processor, as I recently had to RMA my i9 14900k processor, and modify the bios for stability even after I got a replacement, just to get applications to stop crashing and the OS to stop blue-screening.

For the curious, my intel forum post about that issue. My system specs are included in there as well: https://community.intel.com/t5/Processors/i9-14900k-randomly-crashing/m-p/1593273/thread-id/71838

Firefox crash logs:

Some crash reasons listed are EXCEPTION_BREAKPOINT , EXCEPTION_ACCESS_VIOLATION_READ , and EXCEPTION_ACCESS_VIOLATION_WRITE .

https://crash-stats.mozilla.org/report/index/00bbdeec-14a7-4a44-b94c-864b80240802

https://crash-stats.mozilla.org/report/index/763b6ba3-20d6-4d7f-b45a-590c90240802

https://crash-stats.mozilla.org/report/index/be827794-0dc8-43cd-b856-a531f0240802

https://crash-stats.mozilla.org/report/index/450e5778-85f2-45e6-9bd1-6009b0240802

https://crash-stats.mozilla.org/report/index/defca8cd-6541-4b53-93f1-a6ce70240802

https://crash-stats.mozilla.org/report/index/e2fb7a02-addd-4bb9-9d19-2a4540240802

https://crash-stats.mozilla.org/report/index/9a645cd9-2cad-4116-ac8d-60a410240802

https://crash-stats.mozilla.org/report/index/23e997ca-d79d-4aa4-8de6-ac4400240801

Thank you in advance

Asked by Trooper170 1 day ago

youtube screen spins and doesn't play video

Two days ago firefox would not play youtube videos. I select a video from my home page and the screen turns black and I see a spinning circle. Then an ad will appear dark… (read more)

Two days ago firefox would not play youtube videos. I select a video from my home page and the screen turns black and I see a spinning circle. Then an ad will appear darkened and I can skip. When I do the screen returns to black. This does not happen on any other source. It does not happen when I use Microsoft Edge.

Asked by moodypoint 1 day ago