Firefox 社群討論區

Windows 11 Pro - Dell XPS8940 desktop - i9

Firefox will not play video from a website. If I save the video, it is a MP4 file. Windows Media Player and VLC will play the video file. But the browser shows the message: "No video with supported format and MIME type found."

Chrome and Edge will play this video correctly in their browsers. Firefox will not play the video on 3 different computers, and even when a different user account is involved (without Firefox sync).

The evidence seems to point at firefox. The website is a Wordpress site.

Is it possible that the website is the problem? If so, why do Edge and Chrome work?

I uninstalled Firefox (latest version) and reinstalled it. Not fixed.

My windows updates are current, as are Dell updates.

This is stumping me. I hope someone can help.

Hello. For a while now I have been using the picture-in-picture feature to play a video in the corner while using other applications. It has been a great help as I have a single monitor.

Unfortunately, I have recently been encountering a severe issue with the feature over the last week. When attempting to use picture-in-picture while my computer is running a videogame (through Steam) my entire system will freeze. The audio still plays as normal, but the image is frozen and the system is unresponsive until I force a shutdown and reboot.

Any help at all in with this issue would be greatly appreciated, thank you.

Hardware Specs: GPU AMD Radeon RX 6750 XT CPU AMD Ryzen 5 5600X 6-Core Processor 3.70 GHz RAM 16.0 GB OS Windows 11 Home

I have tried everything. I've gone into the permissions, I have it set that everything is allowed. I reset and forgot the sites multiple times, zoom and Google Meets, and when I reload still the same issue. It says I do not have a camera. The camera works for both Edge and the camera app on my laptop. I even checked my settings on my laptop, and Firefox has permission to access my camera. However, in the camera request history, it does not show that Firefox asked for access to my camera. It also says the last time it accessed my camera was last year, but I have been trying to get it to work this entire time. I am updated with Windows 11 and the latest update of Firefox. How do I fix this? Is it an issue with Firefox or Windows?

Firefox just keeps getting slower and less responsive. I've cleared the history etc and run my Avast cleanup premium which helped a little, but the other browsers just put it to shame. I hate to switch because I love the user interface, but............ its just frustrating. Windows 11 latest updates.

My Firefox Browser keeps crashing at random times. I was using Chrome previously and it was worse than the Firefox performance. I just installed 128 GB of brand new DDR5 RAM which I tested in windows with no error. I have no malware on my computer currently. I ran all of the usual checks that you suggested with regard to extensions and cache. Here is the most recent report ID that was generated by Firefox:

bp-7c5d5dcf-2fc9-40a3-9659-ff55f0250424

Firefox (current version:137.0.2 64-bit) does not allow drag from outlook on the web and drop on windows 11 file explorer. It shows a forbidden sign when i am dropping on file explorer.

How this problem can be solved?

Sat. 04/19/2025 @9:10 am CDT - Hi. About 2 months ago on any Settings page, FF began to show "your browser is being managed by your organization." The problem is - it's a STANDALONE box, not connected to any network beyond my ISP. I do own websites but I'm not perpetually logged into the host company, so their switch to Microsoft Entra wouldn't have an effect, I would think.

What settings do I change to make FF know that I'm not on a network? Thanks in advance.

Firefox is no longer compatible with my bank's system. I can't log in with the secure access code the bank sends to verify my identity when using Firefox. The bank says it is a problem with Firefox. Other browsers work flawlessly ... are you working on a solution? I only use Firefox unless forced to use something else ...

I am trying to install firefox on my new work laptop. The OS is Windows 11 Pro. It came with an ARM CPU. Specifically: Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) CPU. Everytime I try and install Firefox, which is probably over 10 tries by now, it fails with generic errors. I have tried cleaning everything Firefox related off the PC before subsequent attempts and still get the same errors. I am including a screenshot of what I see shortly after starting the install process.

cannot open allmusic.com website anymore on firefox. this website opens fine on other browsers. Only Firefox is the problem. Any suggestions?

'Running ver 137 and now cannot print to my system default printer. Tried the Troubleshoot fix and same result - defaults to PDF. Is there any entry in about:config to ensure system printer is selected. I have checked all system settings and brother printer is the default.

As I was downloading a video from Google Photos, it showed the yellow by the download arrow and said it failed. I tried multiple file types: mpeg, jpeg, mp4, exe. I googled what to do and my answer was: Disable extensions, start in safe mode, clear cookies, clear history, clear download history. I did all that and I can still not download. I restarted my computer and nothing changed. on FF version 136.0.2

Hey all, I'm hoping someone can help me. I have found no answers online to date.

I cannot print from the Firefox browser. When I click the print button, my printer spits out a blank page.

I can print from any other browser, Word, Excel, PDF files, anything except for Firefox. This may not be as much of an issue if Firefox wasn't my primary browser, so when I start doing work on it and find I need to print something at the end, it's a problem.

My printer software is up-to-date, I tried resetting the printing preference to default (assuming I did this correctly), and I even uninstalled and re-installed Firefox (which was a disaster). None of this helped.

Is there one of you who may be able to provide me with the help I need?

I appreciate your effort greatly.

I have a new desktop i7 computer with 16 GB of RAM. Why are my Firefox browser screens locking up? I'm running Windows 11 Pro. I don't have this problem with Chrome.

Firefox is misdirecting me to a Microsoft Sales page instead of taking me to Outlook. This issue began several weeks ago and is ONLY happening on Firefox. Chrome, Brave and other browsers work correctly. I'm using Windows 11 and Firefox's latest versios.

Here is a short video showing the issue. https://app.screencast.com/QpeMzzoytwq99

For the past few weeks Firefox has been crashing and freezing often. Crashes are worst when trying to access Protonmail, which almost always crashes the tab instantly. Freezes happen most often when browsing Reddit, and also when watching Youtube, but crashes and freezes can happen on almost any website.

I have tried changing profiles, refreshing and uninstalling/reinstalling, but the problem persists and seems to be getting worse over time.

Here are some recent crash reports:

bp-3d92e88d-bdc6-4629-a869-899650250219 bp-c57e72ab-a6e5-47d4-abeb-d5ce90250219 bp-b66a1b94-6392-4fc7-a2d9-4b9ee0250219 bp-2544016d-d918-4027-9b0e-de75e0250219 bp-23ca9aa4-0934-4f23-b2e1-0390a0250219 bp-9ea6fa00-c531-428e-b276-ad3760250219 bp-4b4316fd-ccb3-4787-877b-50ed40250219 bp-fe9ecc18-35dd-4654-b0e9-45ce00250219 bp-5447133c-6fe3-43fd-800a-dbdf10250219 bp-bb92230d-09b1-4920-8cc9-355940250218 bp-a98b5c50-bddb-4693-9199-ecc500250218 bp-0089dc50-da47-4be2-8e72-0dc8f0250218 bp-57364330-d723-4f8d-85dc-f31250250218 bp-2dbcdad1-a7de-4835-ba86-335e20250218 bp-bc7ca88c-c9b2-453c-9774-537b40250218 bp-b98c0da6-12e5-4332-a6e2-4c8680250218 bp-c4e7ff86-5cc6-43d3-aac8-81ce90250218 bp-07fb322d-1f54-478f-8f2f-3db690250218 bp-9670fc71-d8d7-48db-805a-7e8a90250218 bp-862d4443-8773-48c8-a09d-de9780250218 bp-3a7354bc-3fec-44b2-a802-f54de0250218 bp-c6b3cfac-61e4-444e-88e3-02f220250218 bp-9fc98135-55df-4746-8fbd-dd5530250218 bp-422b8b89-a540-4cad-8c1c-d11a00250218

Will be grateful if someone can help me get to the bottom of this Thanks