Firefox Community Forum

I was googling something related to my game and i clicked on a Reddit search result, which i made sure is the official Reddit website not some shady one, then an empty .htm file from moz-safe-about resource got downloaded randomly. I didn't open it, i uploaded it to VirusTotal which came out safe and then i instantly deleted it and ran a virus scan with Windows Security which also came out clean. i tried to recreate this by opening the same website again both on Firefox and other browsers like Zen(Firefox based) and Chrome but nothing happened.

is this a harmless bug or should i worry that it could be a virus that didnt get detected?

Tonight I was roaming around my Firefox settings looking at something else, when I noticed this AI piece pre-checked. Why is FIREFOX, who is supposed to be for privacy and security, authorizing an update that automatically choose AI? Not cool Mozilla. Not Cool. Anyone else have this? and yes, I've already fixed it ;-)

I recently started to get a"The security sandbox is disable" warning. I have already gone into about:config

my settings:

Content Process Sandbox Level 8 Effective Content Process Sandbox Level 0 (note in about:config this setting is 6?) Win32k Lockdown State for Content Process Win32k Lockdown enabled -- default value is true GPU Process Sandbox Level 1

Firefox ver 145.0.2 (64bit)

I can't tell if I've got a browser hijacker. I'm on an android phone on Firefox and using duckduckgo. I have avast antivirus, but the free version. And in the last 24 hours, sometimes when I type inquiries, usually if its a string of letters and numbers, it will redirect me to a website unrelated to my search. For instance, typing in mig23(looking up fighter jet), it won't do searches and instead will take me to some UK boat website. "OICE", a typo, takes me to a NASA OIIR website. It appears to be close to whatever I typed in, but also doesn't happen every single time. This doesn't happen on my other devices, but it also doesn't happen when I use google in Firefox. However, it is possible that this happened on my laptop but I do not have access to it right now.

I am always in fear of viruses and I desperately want this to be a computer glitch. I cleared the DNS cache, I deleted some files and apps and rebooted and its still happening! I don't know what file could've done it.

When creating a password on Linux Desktop version 144 it shows the password text instead of hiding or at least provding a option to hide when typing out the password.

Seriously - it could be as easy as to just click "view certificate" so it opens up in Windows's standard certificate window where I can easily import it to my cert store, but someone decided it requires a bunch of useless and forgettable tasks so that FF recognizes it.

I recently opened Firefox to see a new flagged warning under my toolbar that says "The security sandbox is disabled. Your configuration is unsupported and less secure."

I have gone into about:config and adjusted every security.sandbox element to see if that would change anything; it did not.

I am running on Windows 11 Home so I cannot install or properly run Windows Sandbox.

I would either like a solution to enable the sandbox once again, or just remove the notification from the toolbar.

I have an old Mac desktop computer and use firefox as my browser. I go to hotmail and click on and up comes my inbox. I click on an item but nothing opens. then I get a message up top saying firefox prevented the opening of one or more pop up windows. I have changed my password with microsoft. That has not improved things.

Today as I got to work (Windows 11 machine), I had a suspicious Firefox.exe file on my Desktop, it was not a shortcut, but exe file. I did a little investigation and research, and I noticed some difference from Program Files exe file and Firefox.exe on my Desktop:

C:\Program Files\Mozilla Firefox\firefox.exe

Size: 695424 bytes SHA-256 hash: EEB242895F8ED48B43EAAA9ECA06C6DDE54425F8AE0E16200D2D46F839B9A540 File version: 145.0.0.327 Copyright: ©Firefox and Mozilla Developers Date modified: 16.11.2025 12:35 Original filename: firefox.exe Digital Signature: Mozilla Corporation

and Firefox.exe that appeared on Desktop

C:\Users\User\Desktop\Firefox.exe

Size: 389248 bytes SHA-256 hash: E8DA5735FE1B5E92BA3636B8D17B5BEC0EA521DB6A8B5A52177FF3E8B2F60710 File version: 145.0.0.327 Copyright: Licence: MPL 2 Date modified: 16.11.2025 12:35 Original filename: desktop-launcher.exe Digital Signature: Mozilla Corporation

I scanned both files in VirusTotal, and they both seems clean and legit

I uploaded both files to:

https://drive.google.com/file/d/1kALgQbfhIpHqs1pN6dmTdF71nm10LlD-/view?usp=sharing

Can somebody assure me that both files are OK, and can somebody explain to me why Firefox.exe appeared on my Desktop, and why is there difference between two files in size, Copyright info, and original filename ?

Hello, my name is Dimitris and I have pc with windows 11 and bitdefender total security installed and fully updated. Since yesterday when I open mozilla firefox a file on desktop appears with the name bd_config.cfg. I wonder whether my pc is infected with a virus or malware?

Best Regards

Hi, after the last update I got this message that resides above my browser window:

The security sandbox is disabled. Your configuration is unsupported and less secure

I'm on Windows 11.

Hello, This extension is a scam, it stole my cryptocurrency account balance today after installing. Please check. https://addons.mozilla.org/en-US/firefox/addon/jupiter_mobile/

On Windows 10 with 64-bit Firefox, after updating from version 144 to 145, some local HTTP-only servers stopped working and became inaccessible. When I enter http://<local server name>, after a few seconds it automatically changes to https://<local server name>, and since no HTTPS service is running, it ends with a “Server not found” page. It seems to be related to DNS — accessing http://<IP address> works fine.

I tried a clean installation with a new user profile, but it didn’t help. Downgrading to version 144 fixes the problem, but at the cost of losing the user profile (which is a disaster). I also tried to check the HTTP-only settings (which I’ve never modified), but that didn’t help either.

Is anyone else experiencing the same issue?

Hi, I recently visited what I thought was a valid website only to get bombarded with ransomware popups. They state that my McAfee account has expired, an account that I never had, and they insist that I click their link to repair it. It doesn't appear to be a hack or that it is currently mining any info from my account. Obviously, I know better than to click on the link ( one of which is: d3venj8hubcc73ch6bp0.texonnerro.co.in TROJAN VIRUS FOUND Click here to secure your data. There are 4 different messages but all have the same URL address). It's really just annoying at this point. Also, it is specific to my Firefox browser. I have no issues when I use MS Edge. I looked to see if I could uninstall Firefox but did not find any way to do that. I know I would lose all my settings, etc doing that, but if that's the only solution, then so be it. Any assistance you can provide will be greatly appreciated.

The attached image is one of the messages. They're using your logo to make it look authentic

Thank you.