Firefox Community Forum

Hello, thank you for taking the time to read my request. I am a long-time user of Firefox, but recently I have encountered a series of bugs.

1. Initially, I couldn't access GitHub. On the same computer, Edge works fine, but Firefox fails to load the page. Sometimes, the page content loads in Firefox, but the layout is completely messed up, leading me to suspect that CSS files are not loading.

2. I uninstalled Firefox, deleted the profile, and performed a complete reinstallation. This time, I couldn’t even open the Firefox account login page, receiving the error `SSL_ERROR_BAD_MAC_READ`.

3. Following online advice, I set `security.tls.version.max` to 3, but the issue persisted. The error changed to `SSL_ERROR_RX_MALFORMED_SERVER_HELLO`. When checking the certificate, the common name was `n.sni-347-default.ssl.fastly.net`.

4. Suspecting an issue with the system or browser certificates, I deleted all self-signed certificates and self-signed CAs (such as Fiddler and Accesser) from the system, but I still cannot access the site.

Please tell me, how should I go about solving this problem?

您好，感谢您在繁忙之中拨冗阅读我的求助。

我是Firefox的老用户，但最近发生了一系列的bug。 1. 最初是github无法访问。在同一台电脑上，用Edge可正常访问，但Firefox无法访问。Firefox有时页面内容可正常加载，但布局全乱，怀疑是CSS文件未加载。 2. 我卸载Firefox，删除配置文件，完全重装。这次连火狐账号登陆页面都无法打开，提示SSL_ERROR_BAD_MAC_READ。 3. 我按照网上的提示，设置`security.tls.version.max`为3，仍然无法加载，报错变为`SSL_ERROR_RX_MALFORMED_SERVER_HELLO`。查看证书，通用名称为`n.sni-347-default.ssl.fastly.net`。 4. 怀疑系统或者浏览器证书有问题，删除了系统内所有自签名证书与自签名CA（fiddler, Accesser）但仍然无法访。

请问我该如何解决这个问题呢？

I am unable to log into my Microsoft account normally. After entering my username and password, when I should be prompted to enter the two-step verification code, the webpage only displays the message: "Please retry with a different device or other authentication method to sign in. For more details, please see this link."

To resolve this issue, I launched Firefox using the -P command to access the Profile Manager, deleted my existing profile, and created a new blank profile. After logging into the new profile, I first signed into my Mozilla Firefox account to reload all my bookmarks. Without waiting for the synchronization of bookmarks and extensions to complete, I immediately visited account.microsoft.com and attempted to log into my Microsoft account, but the issue persisted.

Strangely, I opened a new private window and was able to successfully log into my Microsoft account through it.

Right below the search bar my browser has a warning "The security sandbox is disabled. Your configuration is unsupported and less secure."

I am on Windows 10. I have tried uninstalling firefox, removing appdata and all other firefox files and settings, resetting about:configs settings, disabling my BitDefender antivirus. Nothing fixes it. Completely fresh install of firefox still gives me that message. Sandbox level is default (9).

Any help would be appreciated.

I'm getting announcements of a virus threat that purports to come from Mozilla Firefox. Usually one or all three of the attached small windows that say: 1. "Viruses Found. Antivirus notification. via https+++d512ucanaffc739fe48g.cgm-defender.pro" With a Dismiss button. 2. Attention! Click here to secure your data!. via https+++d512ucanaffc739fe48g.cgm-defender.pro" With a Dismiss button. 3. "System Warning!. Click here to remove them! via https+++d512ucanaffc739fe48g.cgm-defender.pro" With a Dismiss button. I have run full scans and offline scans with MS Defender, but these warnings still appear. Is this legit? I suspect these are a virus of some sort. Either way, how do I deal with this?

For months I've been trying to clear my saved form data as I put in the wrong email address, and when using saved form data sometimes don't notice it's wrong, so replies disappear into the ether.

Under Settings/Privacy & Security/Clear browsing data I have cleared Everything with all check boxes checked, and multiple times just tried the Saved form info checkbox. The wrong email refuses to die along with the related form data.

It is infuriating. Maybe you can correct it manually, or actually wipe it for me? The INCORRECT email is 'bongoots@yahoo.co.uk'. The CORRECT email is 'bongboots@yahoo.co.uk'.

Many thanks, Bruce Clarke

Hello,

I have several PC;s but all suffer on occasion absurdly slow performance when a Firefox update is released.

I may be wrong but it appears there are too many of these processes running, I tried changing the value in " about:config " but Firefox defaults the value back to " 12 " when the browser is restarted.

" app.normandy.migrationsApplied 12 "

The below details are from a small, new cube pc that runs great, it is slow but does perform well, even previously just the other day running multiple Live Youtube streams with no issues, until now. :)

Any help would be great. Thank you!!!

" Firefox 142.0.1 (64-bit) "

Device Name Garage Processor Intel(R) Celeron(R) N4020 CPU @ 1.10GHz 1.10 GHz Installed RAM 4.00 GB (3.83 GB usable) Storage 58 GB SSD VID:32 MMC64G Graphics Card Intel(R) UHD Graphics 600 (128 MB) Device ID C12EB49A-0C22-41C3-A8E6-4420E4A419B0 Product ID 00330-50441-82637-AAOEM System Type 64-bit operating system, x64-based processor Pen and touch No pen or touch input is available for this display

audio is not playing in firefox, nor does it appear in my third party sound mixer like it usually does. it does appear in windows' sound mixer, but does not play any audio. i have refreshed firefox and checked my drivers and my devices work fine. firefox is the only application on my computer that refuses to play audio.

I deleted all the shortcuts from Firefox desktop browser's homepage and now I cannot add them back.

There are no blank shortcut icons on the page anymore. No setting to enable them. Shortcuts are enabled. Page is mostly blank, only has Firefox icon.

I tried to close and open Firefox as well as disabling and enabling the shortcut setting. Adding more rows did not do anything.

Before this issue occurred, I had one shortcut on the page that was linking to localhost. I opened the edit window to the shortcut and pasted the same address and saved changes. After that I removed the shortcut. All of the blank tiles immediately got removed from page and I had no way of adding more shortcuts.

Hi,

I'm using Powertoys Keyboard Manager to start Firefox from keyboard Shortcuts. It work almos perfectly except for focusing the newly started window.

The windows opens well, but i' have to click in it to take the focus of it, otherwise i can't type in address bar for example.

I tried to add -foreground in the shortcut parameters, but still not working.

Any idea ?

Thank you very much.

So there's a function where you select Korean character ㄱ~ㅎ and press Hanja(Han/Chinese letter) Convert key, you can convert it to special symbols

The issue is: when you press Convert key while inputting a word without space, it automatically selects the first letter of the word(Yes the text cursor moves front itself)

In every website includes search bar

You need to menually select a letter by mouse drag or shift key And then press Convert key to show the intented converting list

Idk how long it's been but the issue is pretty old

Additionally, you have intermittent Korean letter seperating issue, too("한글" -> "ㅎㅏㄴㄱㅡㄹ")

(For who suffer from the same issue, you can use Naver Whale browser instead)