Diễn đàn hỗ trợ Firefox

Hey, I'm trying to use Firefox on a school internet connection and I'm getting the "Did Not Connect: Potential Security Issue" error on every site, including www.google.com. It connects on other WiFi connections and through chromium browsers (Ex. Brave). I've tried the following: - Set Proxy settings to "No Proxy" - Set "Enhanced Tracking Protection" to Standard - Disabled IPv6 in about:config - Set security.enterprise_roots.enabled to False - Logged into my Google account over a different connection - Allowed Windows single sign-on for Microsoft, work, and school accounts - Tried refreshing Firefox - Restarted my computer

The error is still occurring. Is there a way I can allow Firefox to connect normally over School WiFi?

==================================================================

ERROR CERTIFICATE HERE:

https://www.google.com/search?client=firefox-b-d&q=example

Peer’s Certificate issuer is not recognized.

HTTP Strict Transport Security: false HTTP Public Key Pinning: true

Certificate chain:

MIIDjzCCAnegAwIBAgIHejiLAIJN+TANBgkqhkiG9w0BAQsFADCB1zELMAkGA1UE BhMCQVUxDDAKBgNVBAgTA0FDVDERMA8GA1UEBxMIQ2FuYmVycmExIzAhBgNVBAoT GkNvbnRlbnRLZWVwZXIgVGVjaG5vbG9naWVzMRowGAYDVQQLExFDb250ZW50S2Vl cGVyIFdlYjEyMDAGA1UEAxMpQ29udGVudEtlZXBlciBBcHBsaWFuY2UgQ0EgKDYx ODY2Nzg0OTg2NykxMjAwBgNVHRETKUNvbnRlbnRLZWVwZXIgQXBwbGlhbmNlIENB ICg2MTg2Njc4NDk4NjcpMB4XDTI0MDIxMTE3MDM1NVoXDTI0MDIyMDE3MDM1NVow GTEXMBUGA1UEAxMOd3d3Lmdvb2dsZS5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQCjrIjcc0kACwgtHnQao9UZ9MwFsdICJiWanGPsO4zzqUlliN+M L5ZF6UZ7TnpKTMdBBmohgXfCMFnsLBilFIgV/DA89Jk/thFIXj/RXaIihKn7q0mH 3OkxUNrsZ0SmGAaJBH9jmXC3+WTFP/HZQ/GMErs7nFTCHfE4sRhvdnZ+//c/Pywa PpkBI1JQJhmeWy5UB1PdcnFfcd4CdlMZvd2LM7IQYuvZQpAyDFSsict2dRf2FnOG f9uzAQQJd0s5sU9lOsD6P/LxWKU/RqwOPYx9/Lk/g2cX7+SYlbBmS4+CerO0a+Kg XBc8WgPRv3DMTSKLK2v3w/LNS0nJ7gKMau+3AgMBAAGjHTAbMBkGA1UdEQQSMBCC Dnd3dy5nb29nbGUuY29tMA0GCSqGSIb3DQEBCwUAA4IBAQBotm1oL7S/xmbCAcKZ qufi2SoBKd6xNndp4MLPLgV+Dq30NtF69nkmrHvGYl9sXE1bYsnGaHmiAJBf/HEx oNfEY/ziFqn59Ryd7Fwa03fPMhuRQJdfVgTgGdmxE6Z8b4s5eDZFoYoNQ0DFGq6c 4v1srnjfkGIokik+uwi5C46Dg0rHn/BPWkFhZ7bSQKV69vSJ1pofZol6ubMoWkaK LyNxQliqKQnUjdDNP/c4EIB/lsMaKlWfN26vzcLANwchtoZ/0m7H6qcNghe5BP2l 0Q70+nA4/746/2AXAfP5IkIRAHDvmDS6JYChuXZ9ybDziXgj/9740IsUQ4kTp2Z6 p0co

MIIFoTCCBImgAwIBAgIJAMzCdRH6uA8rMA0GCSqGSIb3DQEBCwUAMIHXMQswCQYD VQQGEwJBVTEMMAoGA1UECBMDQUNUMREwDwYDVQQHEwhDYW5iZXJyYTEjMCEGA1UE ChMaQ29udGVudEtlZXBlciBUZWNobm9sb2dpZXMxGjAYBgNVBAsTEUNvbnRlbnRL ZWVwZXIgV2ViMTIwMAYDVQQDEylDb250ZW50S2VlcGVyIEFwcGxpYW5jZSBDQSAo NjE4NjY3ODQ5ODY3KTEyMDAGA1UdERMpQ29udGVudEtlZXBlciBBcHBsaWFuY2Ug Q0EgKDYxODY2Nzg0OTg2NykwHhcNMTkwNzAxMDI1MzAzWhcNMjkwNjI4MDI1MzAz WjCB1zELMAkGA1UEBhMCQVUxDDAKBgNVBAgTA0FDVDERMA8GA1UEBxMIQ2FuYmVy cmExIzAhBgNVBAoTGkNvbnRlbnRLZWVwZXIgVGVjaG5vbG9naWVzMRowGAYDVQQL ExFDb250ZW50S2VlcGVyIFdlYjEyMDAGA1UEAxMpQ29udGVudEtlZXBlciBBcHBs aWFuY2UgQ0EgKDYxODY2Nzg0OTg2NykxMjAwBgNVHRETKUNvbnRlbnRLZWVwZXIg QXBwbGlhbmNlIENBICg2MTg2Njc4NDk4NjcpMIIBIjANBgkqhkiG9w0BAQEFAAOC AQ8AMIIBCgKCAQEArVs5X3wZbZAhKy/jHSoB1vHCdoK9JU6TLTOzMnuVneK3DRu1 doTTqIpdKTMUXjEkcihZoEqCQTpCAsUXLWpBELXJXgqYBhpHmjp3Wgis0brGgc28 WtMl17sYj5eAgMtcU1k+NWPiKKoSgH37/9UnXz+APZmx4d/eLpZAE6nFJCZgq0kB cRp6WTuLAsDqcXCV8g+3RPCqxLLa4AvdOcvZHux80em0nTNeoBcNiON8kWmZQcUl HD/2puJesD49Z6le9fakyR7vFkUhJ/mSbZ3fB4qfJcGw6Qq8I0IvD5dVqpqLVVlV kTBNxCdoGtH36aUzNjjCJS2o2piTrx0wqWnsCQIDAQABo4IBbDCCAWgwHQYDVR0O BBYEFMm17+/zw9LeACXRuD4EZ0ftMAPpMBIGA1UdEwEB/wQIMAYBAf8CAQAwDgYD VR0PAQH/BAQDAgEGMBEGCWCGSAGG+EIBAQQEAwICBDCCAQ4GA1UdIwSCAQUwggEB gBTJte/v88PS3gAl0bg+BGdH7TAD6aGB3aSB2jCB1zELMAkGA1UEBhMCQVUxDDAK BgNVBAgTA0FDVDERMA8GA1UEBxMIQ2FuYmVycmExIzAhBgNVBAoTGkNvbnRlbnRL ZWVwZXIgVGVjaG5vbG9naWVzMRowGAYDVQQLExFDb250ZW50S2VlcGVyIFdlYjEy MDAGA1UEAxMpQ29udGVudEtlZXBlciBBcHBsaWFuY2UgQ0EgKDYxODY2Nzg0OTg2 NykxMjAwBgNVHRETKUNvbnRlbnRLZWVwZXIgQXBwbGlhbmNlIENBICg2MTg2Njc4 NDk4NjcpggkAzMJ1Efq4DyswDQYJKoZIhvcNAQELBQADggEBAEWKXvkihQGpdDD9 q2eWUhFoS9M1wdlRIgXUcl3823xIVAcBLoBtTNB48PvHqfbwzwSbFjCKyZehs9A3 tWcVZStqHFOePyS6boffVAUgf20ms3ICZ8iD91nKNo6E7WxiOOl3JTgtyOA4lRTC peRj3rr1Y+1e3HWdKQACTr26nXsOfd2hRjiSI29BCCRDrFUmtPVFrK7c6tmhx4MN ZPpkWQ25wFLpj5TvRB0zf3TZvzzKr5lh6yuRoen8Jx8kvKPbpRpuUuQj+3HbV1bo tWkGFmd4Ug8YqUfUX5R+JMwGVzk7z6J/kxUGd8YNEmGlIR+gZWoKX/5x7SAlcpxI ts2dPqI=

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

Hi there,

I've been having an issue lately where random text I've written is being inserted into other areas of my paragraphs in online text blocks. This mainly happens when I hop between paragraphs and try to edit content.

IE: If I wrote this statement and went back to correct something above, this sentence would "somehow" get added into the spot where I'm editing. It makes NO sense and is only happening within Firefox. Is there a way to fix it? I've noticed this happening on both Facebook and Indeed now too...so, I think it could be more of an issue with Firefox than certain sites.

The image is an example of the text being added in and reinserted. Thanks in advance for the help!

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 have a macbook pro running Sonoma 14.2.1. A few days ago I noticed the computer didn't update to the current version of Firefox when I attempted to do so after being prompted that an update was available. I went to "About Firefox" and saw the error message "Failed to check for updates". Please help. Thanks.

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, 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

3 tabs open, left firefox idle on pc and walked away for an hour. Came back, system barely responsive, managed to grab a screenshot. This happens every single day. If I leave firefox idle, or in background for any amount of time, it eats up all the ram and the system grinds to a halt and crashes. Can't get logs, or use profiler. This happens every single day, multiple times per day and only when firefox is in background or pc is idle. I don't use more than 3-4 tabs, this happens on random websites, sometimes even when no websites are open. I can literally open firefox with no tabs and let it sit idle and same thing happens.

Using Nord Pass extension on Mozilla fine until today, when clicking on the green icon for stored username and password, this appears - "sudden error message : can't handle ITEM/URL_SEARCH type message"

This doesn't happen every time, but certainly more frequently than it should. Is there anything that can be done about this. Is this about competing for resources. Maxing out the CPU?

Just now occurred. Firefox closed shortly after opening Chrome. No crash notification. Then, Chrome froze, with one of those "Close program or wait" messages.

This happens now a lot, sometimes I can uninstall Firefox reinstall and it works. That worked this time but only for a few days. I am back once again to where I get this error on every place I visit. I have cleared my cache etc.. uninstalled reinstalled did a restore. It is only Firefox all other browsers work fine. No idea what to do anymore and am sad because I prefer Firefox. I only have standard windows 11 home security stuff installed so nothing special or fancy firewalls. Tried turning on default fire wall. Tried all the instructions on the more info page the error screen leads to.

This error occurs on most all websites or places I need to log into

Secure Connection Failed

An error occurred during a connection to mail.google.com. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Anyone know why this is happening and a solution?

Ever since the last update the browser's font has been garbled (tabs, address bar, settings page, etc). Some websites show this problem too.

I tried downgrading back to 119 and it displays fine. I was force updated back to 121 and it's broken again.

As the title says, after a certain update(I'm not sure which, probably within the last few months or so), firefox on my machine starts crashing randomly. Some crash reports:

https://crash-stats.mozilla.org/report/index/bp-3c8ccdac-bf09-41af-a459-a5e0c0240204 https://crash-stats.mozilla.org/report/index/bp-a5d887f3-3d75-4e09-a4af-823a20240204 https://crash-stats.mozilla.org/report/index/bp-1cb416ff-e338-445c-9ff3-016f30240204 https://crash-stats.mozilla.org/report/index/bp-3da43a7e-5952-4715-83cf-512aa0240204 https://crash-stats.mozilla.org/report/index/bp-c6778172-5281-482b-b815-ebf840240204 https://crash-stats.mozilla.org/report/index/bp-54dd6c03-a99c-4a08-8a7c-4c80d0240204

I'm using Fedora 38 workstation, GNOME as the desktop environment, and Mutter as the wm.

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.

Firefox has been white-screen blocking my access to some common websites including CNN, Amazon and possibly others. No error messages, just a blank white screen. This is a sudden change and has never been a problem in the past. Chrome and Firefox on my other computers are not affected. I have cleared caches and deleted all tabs with no change in symptom. I've also checked CPU and memory resources and both appear normal. No sites are being blocked by settings either, though I would expect Firefox to give me a "This site is blocked" message of some kind if that were the case. How do I fix this?

Why can't Firefox copy text to the clipboard anymore? It won't copy text from a web page, from a URL, or even from about:support "Copy text to clipboard"!!! I'm using version 1.22 64 bit on windows 11. I've reinstalled Firefox but it doesn't make a difference. I've tried "Troubleshoot Mode" and it's still broken!!!

I can paste into Firefox but something has broken copy!

I installed a user.js script to my profile, and even after deleting the file itself, the settings keep changing to what it wants, despite the file being deleted.

I've been troubleshooting this for a few hours now, and i surmise it got embedded in my firefox account somehow, because when i close firefox in task manager i can see a bunch of firefox processes doing stuff for about 30 seconds, and if i launch firefox again after that my browser is messed up.

In window's firewall i set a rule to not let firefox send and receive packets and while a block on receiving didnt do anything, the block on firefox sending data did prevent it from applying that fking user.js script. However, if firefox cant talk to websites its obviously useless, so im stumped.

I have deleted every single folder on my computer firefox uses, including cleaning the registry of its things aswell, so it has to be downloading that script from some server, but i havent been able to figure out from where. I assume its attached to my firefox account because, where else could it be getting the script from?

When i was installing the user.js script, i had no clue it would be so damn hard to get rid of. Thank fuck i have a backup of my profile.

So I've noticed that after putting my computer to sleep, upon return Firefox will be unable to load any videos from seemingly any site. The temporary solution to this is to reset my computer as sign offs, locks or returning to sleep do not clear the issue. I've tested on different browsers/sites and can confirm that this is exclusive to firefox. I have booted firefox in troubleshoot mode, cleared my history and given the sites time to load with no luck on any of them.

Is there a solution to this?

Hi there, Last night I installed some new hardware into my PC, new motherboard and CPU for example. After that, I booted up the PC, everything worked completely fine and I was able to listen to Youtube / Twitch / Spotify etc. through Firefox.

This morning I boot up the PC, everything still works perfectly and I have audio coming from all other sources EXCEPT for Firefox. I have browsed every forum already but can not find anything that relates to me. I can't set my output device, since Firefox doesn't show up in the volume mixer. The tabs aren't muted. I have restarted Audiosrv and Windows Explorer several times. I have re-installed Firefox twice. I have tried booting it in safemode. All of the above hasn't resulted in a single second of audio. I am at a loss.

Kind regards, Siem Hoefnagels

A few days ago Ubuntu (22.04 LTS) showed me a message saying I can upgrade my OS (or something along those lines). I click on agree (any button that would let me proceed) and the upgrade took place (without restarting). Along with the upgrade Firefox was also updated to its latest version at the time (119.0). Since then, videos on Twitter play but without sound. On some other websites also none of the videos play. On YouTube, Firefox shows me a message saying "To play video, you may need to install the required video codecs" but the videos play fine; I haven't tried other websites but I assume all would have some issues. Google Chrome however doesn't have this issue and all videos play without any issues.

Note that I have not restarted my computer since the upgrade. I doubt this could be an issue but please let me know if you think this could be the issue.

I did the followings and restarted Firefox but none have worked so far for Twitter and some other random websites that I come across, but they resolved the issue for YouTube and now YouTube videos play, although I still get that codec message at the top of the tab:

sudo apt-get install ffmpeg sudo apt install ubuntu-restricted-extras sudo apt install libavcodec-extra

Someone told me this is because the default Firefox on Ubuntu 22 comes as a snap package and I should install the APT package manually instead so that it works. I prefer not to do this because I have lots of tabs open and have manually changed lots of the settings (including in about:config) that I want to preserve. I would also like to preserve the history of visited websites and keep the current cookies (don't really want to keep entering username/password on the same websites again). So the best way for me is to fix the issue for the default Firefox on Ubuntu 22.

Could you help me figure out what I should do to fix this issue?