Firefox Community Forum

since I moved offices and accepted fire fox as my default browser I keep getting a screen that say something went wrong and it wont allow me to access some websites

Hello, I downloaded Firefox Nightly on my android smartphone some days ago and used it with Proton VPN and some antifingerprint commands of the browser panel. The first days were working properly, the last day was not working anymore with VPN, but I need to use it with my VPN. My VPN settings are the same that were before so the crushing problem is about the browser itself. Also tried disactivating browser extensions but nothing changed. I can't browse anything with VPN right now

Anywhere between 3-5 popups have appeared on the right side of the screen essentially telling me of trojan detected, steps to protect my data, to remove viruses etc. and that my McAfee license has expired. Since I have not had McAfee for several years and the addresses to click on look suspicious to say the least I am not about to click. BUT There are boxes to dismiss & an X to remove in upper right corner. Clicking them removes the warnings for about 30 seconds & then they are back. What can I do to get rid of these? Obviously I'm not the most computer literate person around & am stumped.

I've been looking at firewall logs for my client and router software firewalls. My 3rd party firewall flags repeated outgoing TCP packets to IP 34.149.100.209 as coming from Firefox and 'Restricted', although restricted is the firewall apps syntax. When I look at the router firewall on WAN it was seeing the same IP outgoing. These packets only originate when Firefox (latest version) opens. Perhaps there's nothing to worry about or it's there to poll for those who want to select a Google search engine? Anyway, I've added a rule in the router to block the IP, although I think Google use other IPs.

There is plenty of web discussion to REMOVE restricted from Firefox but I want to make sure 'Restricted' in my case means BLOCKED, is that possible or do I misunderstand what restricted means? Thanks

Why am I receiving repeated warnings from Malwarebytes about blocking every-day websites due to a "Trojan"? The sites include Gmail, Ancestry.com, Newspapers.com and others.

The report warnings are being generated by the Malwarebytes program on my PC. They are confusing to me. I am running Windows 11. The warnings are being logged by the Malwarebytes program in the "Web Protection" section of its "Detection History" web page. In every instance, the log reports are the same: in the URL identification column there is no identification of the URL, only repeated instances of "N/A"; the IP address is identical for all the warnings; the port is always "0"; the file column alternates from "C:\Program Files\Mozilla\Mozilla VPN\Mozilla VPN.exe" to "System" and back again to "C:\Program Files\Mozilla\Mozilla VPN\Mozilla VPN.exe"; in the final column of the log, the Date column, the warnings began last evening, Monday the 12th, at 6:50 p.m. and have now extended to to a total nine warnings.

Even as I was writing this communication, the Malwarebytes warning popped up on my screen, telling me that this website and this web page are blocked due to the presence of a Trojan.

Is my PC infected? The Malwarebytes "scan" reports no "detections." I am at a loss.

Good Afternoon

I have exhausted all possible restrictions for Fire Fox to sync with McAfee I have gone to Windows Firewall the inbound rule is blocked if rules don't apply Fire Fox and McAfee are both enabled on my personal computer as private The McAfee keeps showing a setup window for both Googles and Fire Fox At one time all 3 of my browsers were setup and then it drops as a change in default browser is selected

Regards Ron

Hello,

Recently I have noticed 'Your browser is being managed by your organization. - That being ImportEnterpriseRoots' appearing in settings. I have seen this mentioned by others but as of yet I cannot see if it has been sorted yet. I have uninstalled and it went away, but it has since returned the following day. I Do not have any other anti-virus on this laptop other than Windows Defender so it cannot be that. I will not be using Firefox as default until this is gone, or at the very least know that its safe.

DO NOT COPY AND PASTE! This is not written correctly! Someone please help with this or correct the code. I tried different ways to do this and nothing works ---- I am beyond frustrated with it.

Security features warning

You may see a warning that “some of Firefox’s security features may offer less protection on your current operating system”.

The sandbox in Firefox makes use of unprivileged user namespaces when creating new processes for enforcing more security. This can be considered a security risk, therefore some Linux distributions have started to restrict its usage and only allow it to work where there is an AppArmor profile.

Such profiles can only cover a limited set of installations paths, including Snap and Debian packages. They cannot however cover some other use cases, such as tarball installations as well as local development builds.

To create an AppArmor profile for Firefox:

In /etc/apparmor.d/, create a file with the name firefox-local

In the file, add the following:

1. This profile allows everything and only exists to give the
2. application a name instead of having the label "unconfined"

abi <abi/4.0>, include <tunables/global> profile firefox-local /home/<USER>/bin/firefox/{firefox,firefox-bin,updater} flags=(unconfined) {

   userns,
   # Site-specific additions and overrides. See local/README for details.
   include if exists <local/firefox>

}

Replace <USER> with your Linux user name. This assumes the Firefox install is at $HOME/bin/

Once you have saved the file, run sudo systemctl restart apparmor.service in the Linux terminal.

Hello.

Everytime I open a new Firefox window, I get this warning from my antivirus:

Suspicious connection blocked 8 minutes ago

Feature: Online Threat Prevention

firefox.exe attempted to establish a connection relying on an unmatching security certificate to sync.contextualadv.com. We blocked the connection to keep your data safe since the used certificate was issued for a different web address than the targeted one.

Usually, when I see this happen, the company fixes the issue within a day or two, but this has been occurring since at least 4/9/2025. This warning occurs regardless of whether my browser is logged into it's Mozilla account or not.

Regards, Jason