Firefox 技術支援討論區

Firefox is blocking/preventing me from visiting a website even though it is secure but Firefox does not recognize the certificate issuer. How do I get around this? Thank you.

Hi,

I cannot logon to icloud using Firefox (since 3 days) on my windows pc. It normally works fine

I can logon on using the mobile firefox browser and I can logon using Edge. However, I don't want to use Edge

I use a VPN (including browser extension) but I haven't had a problem before

Thanks

Jonathan

Hello Mozilla Support,

Since 2 upgrades ago, anytime I try to watch a livestream, my browser slows right down and then crashes.

I don't care why its happening, I just want a definitive fix for the issue.

I'm so aggrieved at this happening constantly, if you cannot provide a firm resolution to this issue, i will simply move to another browser.

I've tried your about:config setting restart to false and other fixes but still keeps happening.

I await your reply.

With Regards,

Mark

Hello, I have been a diehard Firefox user since it was still in Beta. I have been using computers personally since 1994 and professionally since 2004, doing Windows and Linux systems administration. I can and will do whatever (within limits) you need me to do to troubleshoot and resolve this issue, which is otherwise going to cause me to abandon this otherwise excellent browser, perhaps forever. The browser.cache.disk.capacity seems to work, but browser.cache.memory.capacity does not.

Why does firefox not respect the assigned values for browser memory cache (browser.cache.memory.capacity)? Is there anything I can do to limit the memory and processor usage of Firefox and its child processes? Is extension CPU/memory usage constrained by the application values? Is there a way to determine and/or limit the resource usage of extensions?

I have included a number of screenshots documenting its behavior and generated an about:memory report during "normal use". After configuring a number of system variables, I then attempted to determine its resource usage under heavy load.

Open the browser with a couple 2, 3 tabs: ~1GB memory usage Use the browser as "normal" (dozens tabs): ~2GB memory usage Open 100+ tabs from history: The CPU and memory resource usage increases until it consumes all available system resources despite configured values. After killing and restarting the process, the tabs have invisible titles in the extension and browser, and must be closed using Ctrl+W until only a few remain after which the browser can be used normally and again consumes ~1GB.

While I understand "just don't open so many tabs", under some circumstances such as poorly written websites, bugs, etc, even single sites may attempt to claim excessive resources. I sometimes run VMs and such on this machine and in order to retain a responsive system, cannot have applications consuming all of the available resources. I have found one proposed solution that uses an external application, is this the only way?

I am open to allowing Firefox to utilize more of the SSD storage (the 1GB limit was imposed for testing) and would be fine with increased slowness due to disk cache or refetching internetworked resources. However, none of the settings I have changed or attempts I have made appear to be able to limit the memory usage in any way. Additional included screenshots are linked above instead of as attachments due to number. I can share or generate additional reports to assist in troubleshooting.

Thank you! JackD

Our office uses a cloud-based database. Mozilla won't allow me to "check" boxes to do database searches for specific things. Google works fine, Edge works fine, but not Mozilla. Any ideas on how to fix this would be appreciated. Thanks!

Artifacts on Youtube videoes when hardware acceleration is enabled. These artifacts is not there playing video on Chrome with hardware acceleration. Disabling acceleration removes artifacts, but videos runs poorly. These artifacts also appears in regular browsing. Intel GPU on latest driver. Since it works in Chrome with the same GPU on the same driver, the problem is in Firefox. Artifacts not there when running Furmark gfx burn in. So problem is not in the hardware. Problem still persistent even on numerous updates of Firefox. Windows 11, Intel HD Graphics 620 GFX, latest driver, latest Firefox.

I've had this problem for a while and it's kept me from actually using the program. At any given time when I try to run the application, it never lasts for more than a couple seconds before it suddenly stops with no warning. Whenever I get these crashes, the Crash Reporter never opens. Because of this issue I can't open it in troubleshooting mode. At this point I have tried fully resetting my PC twice, uninstalling McAfee, had multiple malware scans, and have uninstalled and reinstalled Firefox itself multiple times. I'm really not all that good at operating computers, I just kind of know how to navigate files. I don't know what else to do at this point.

Firefox since 102 or 103 has a giant issues with gifs, movies ect after resuming from hibernation. In the Dev mode there are errors like this:

MediaLoadExhaustedCandidates = no any media can be loaded

Invalid URI. Load of media resource %S failed

Why does it happen only in firefox? Even in FF 120 Windows.

I want to delete all my web certs except for the top seven, which cover 99.32% of current web certs. I specifically do NOT want the EU Cyber Resilience Act to have the ability to insert their certs into my root store, enabling their member countries unfettered power to compel acceptance of their certs.

I tried following https://wiki.mozilla.org/CA/Changing_Trust_Settings, but this must be for an earlier version. I don't seem to have an Options/Preferences window. On the other hand I am pretty old & maybe just can't find it....

Any hints on how to do this?

hello ppl i hope u guys doing good look in some sites firefox is not playing any sound no audio like on facebook reels or watching a vedio there i cant hear anything and some sites also when i watch vedio i cant hear any sound but in other browser everything work perfect but i like to use firefox its audio prblm and pls know thats the prblm is not from my windows i have windows 10 everything work fine pls help me fix this thx.

Dear Support Team,

Embed map does not appear anymore, after last update of Firefox browser: http://www.ship.gr/map.html

It appears normally in all other browsers. Thank you and best regards Antony ship@ship.gr

For years I was able to view my credit card statements on the Synchrony Bank website, as recent as last year. Today, I cannot view the statements. When I click on the link I get the blocked symbol. (red circle with a slash through it. I am able to view the statements on another browser, Chrome to be precise. What changed? Can it be remedied?

For the last two months since November 2023), log-in to the Wells Fargo online bank site no longer goes past the log-in page. If I use Edge log-in works fine. I use private browsing on Firefox, but I always have. I have Firefox password enabled, but I always decline to use it for online banking when it pops up (and it doesn't matter if I accept it, still no log-in on Firefox).

I don't want to use Edge but Firefox no longer is working on this task for me.

I created a one column spreadsheet with 91 entries in Excel. Then I did a "save as" and choose CSV (comma delimited). One the receiving website, I chose "Browse for file", selected the CSV file I juts created and clicked "Upload". I got an error saying it wasn't a CSV file and could not be uploaded. I tried it again (same file) using Microsoft Edge and it worked just fine. I uninstalled and re-installed Firefox and got the same failure as before. I'm running Windows 10 ver 22H2. I really don't want to use Edge. Is there a fix for this?

Thanks guys for screwing up my day with your latest update. I used to be able to download a .pdf and opening it in my ,pdf reader. I NEED to do this for tax reconciliation purposes. Now your crappy program has decided to open .pdfs in itself and I cant get a downloaded copy any more. What the hell was the programmer thinking? Yes I have gone to Applications and checked that it is set to my .pdf reader. Please fix this before I get fined by the tax office.

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

today i noticed when i send a chat in Facebook chat the scroll bar is blue. It has to be afire fox thing cause it does not do it in Chrome below is chrome and Facebook message now ill go to to Facebook in Firefox and color write a message and the scroll bar is blue .on left i from Chrome on the right is Fiefox how do i go to look like chrome with out the blue scroll bar