Firefox Community Forum

I am running 10 or more tabs with tradevision.io showing real time stock charts running multiple 1-minute charts forcing my CPU/GPU to constantly render live data. Enabling Hardware Acceleration in your browser settings can help balance the load and keep things running cooler but it made no difference. Prices still freeze and I have to constantly refresh. The CPU is flat out and running hot - my laptop is a top of the range xps 16

I'm running the latest version of Firefox on the latest version of Windows 11, and I'm trying to watch TV shows on PBS's Passport service. I get the video but not the sound. It's been like this since Saturday. I don't have this problem at all with Chrome or Edge. Is anyone else having this problem? JT

I have st installed Lime on my old Asus Zenbook an have installed Nord VPN. I am using the Firefox browser showing connected to the internet but am unable to access my webmail account and its popping up messges advising Problem loading webpage and another showing 502 Bad gateway. I am also having problem with the Zenbooks Keyboard with keys randomly not operating when pressed but will work after a prolonged or multi pressing.

Hi! We have automated tests that run in Firefox across a large number of instances. There are about a hundred nodes where the browser is launched. For security reasons, there is no Internet access. When the browser closes, requests are sent to 146.75.117.91. Since there is no Internet connection, the request fails to complete, and the process terminates due to a timeout. Because the browser is controlled by geckodriver, the `driver.close()` call fails with an error. I’ve tried numerous browser startup options, but none solve the problem; the process still crashes. The only thing that works is blocking the IP address at the firewall level or in the `hosts` file. However, I’m not happy with this solution because it would need to be applied to a hundred nodes, which would create scalability issues down the line. Are there perhaps any options I missed? I also found these addresses in `omni.ja`. Could it be that they are hardcoded and cannot be changed via options?

What I tried

1. телеметрия

options.set_preference('toolkit.telemetry.enabled', False)

options.set_preference('toolkit.telemetry.rejected', True)

options.set_preference('datareporting.healthreport.uploadEnabled', False)

options.set_preference('datareporting.policy.dataSubmissionEnabled', False)

options.set_preference('toolkit.telemetry.shutdownPingSender.enabled', False)

options.set_preference('toolkit.telemetry.shutdownPingSender.enabledFirstSession', False)

options.set_preference('toolkit.telemetry.firstShutdownPing.enabled', False)

options.set_preference("telemetry.fog.init_on_shutdown", False)

pac = """data:text/plain,function FindProxyForURL(url, host) {

   var blocked = [
       "incoming.telemetry.mozilla.org",
       "telemetry.mozilla.org",
       "normandy.cdn.mozilla.net",
       "firefox.settings.services.mozilla.com",
       "contile.services.mozilla.com",
       "push.services.mozilla.com",
       "aus5.mozilla.org",
       "versioncheck.addons.mozilla.org"
   ];
   for (var i = 0; i < blocked.length; i++) {
       if (dnsDomainIs(host, blocked[i]) || host == blocked[i]) {
           return "PROXY 127.0.0.1:1";
       }
   }
   return "DIRECT";

}"""

fp.set_preference('network.proxy.type', 2)

fp.set_preference('network.proxy.autoconfig_url', pac)

1. Направить телеметрию в несуществующий адрес

options.set_preference('toolkit.telemetry.server', )

options.set_preference('toolkit.telemetry.server_owner', 'localhost')

1. Или через proxy — завернуть весь трафик в несуществующий прокси
2. только для доменов телеметрии это сложно, но можно отключить все внешние запросы при shutdown

fp.set_preference('toolkit.telemetry.shutdownPingSender.backgroundtask.enabled', False)

1. fp.set_preference('toolkit.asyncshutdown.crash_timeout', 10000)

fp.set_preference('telemetry.fog.log.level', 'off')

fp.set_preference('telemetry.fog.artifact_build', False)

1. Отключить фоновые задачи при shutdown

fp.set_preference('browser.background.tasks.enabled', False)

fp.set_preference('browser.backgroundtasks.scheduled.task.timeout.sec', 0)

1. Заблокировать через hosts-like механизм Firefox

options.set_preference('network.dns.localDomains',

                 'incoming.telemetry.mozilla.org,telemetry.mozilla.org,normandy.cdn.mozilla.net')

options.set_preference('network.captive-portal-service.enabled', False)

options.set_preference('network.connectivity-service.enabled', False)

1. Отключить Mozilla Remote Settings

options.set_preference('services.settings.server', )

1. Glean telemetry (новая система Mozilla)

options.set_preference('telemetry.fog.artifact_build', False)

options.set_preference('telemetry.fog.test.localhost_port', -1)

options.set_preference('toolkit.telemetry.archive.enabled', False)

options.set_preference('toolkit.telemetry.bhrPing.enabled', False)

options.set_preference('toolkit.telemetry.newProfilePing.enabled', False)

options.set_preference('toolkit.telemetry.reportingPolicy.firstRun', False)

options.set_preference('toolkit.telemetry.unified', False)

options.set_preference('toolkit.telemetry.unifiedIsOptIn ', False)

options.set_preference('toolkit.telemetry.prompted ', 2)

options.set_preference('toolkit.telemetry.unifiedIsOptIn ', False)

options.set_preference('toolkit.telemetry.updatePing.enabled', False)

1. Отключить Glean полностью

options.set_preference('datareporting.glean.enabled', False)

options.set_preference('telemetry.fog.enabled', False)

after the new version of firefox update my home page which i have always had Newsmax.com does not load says problem loading page i have tried several times and it will not load. it works in Google chrome so why not in Firefox

I use Firefox in Windows 11, but when I close it and reopen it, my three open tabs are gone, it is supposed to open them, as checked in settings. I see the same thing happening in the MacOs, but no answers for Windows either.

Every time I start Firefox, some of my pinned tab favicons will show an unread dot (although not consistently), even though there may have been zero changes to anything in that tab. Gmail is especially bad about this, making me think I have a new unread email when all of my emails have been read. How do I fix this? I looked in the Tab settings for Firefox and don't see anywhere I can change a setting.

Again, on my Firefox Google screen everything changed from black letters on white to white letters on black. I've googled instructions on how to fix this, but nothing has worked.

Under Settings>Privacy/Security>Browsing Data there is no longer the option to Manage Cookies, despite the help section saying that is where to find it. There is no other place in all of Settings to find the list of cookies. There is only the ability to delete all cookies in History, which I have no desire to do. I edit the cookie list weekly, and it is only now, mid August 2026, under Firefox 153 on Win 10 that I no longer have access to them. How do I get it back?

This is a bit difficult to explain, but I'll do my best.

Our company uses NetIQ Identity Manager, which we access through a web browser. I primarily used Firefox until I had to switch to another browser because of this issue. The problem only occurs in Firefox; I have tested several Chromium-based browsers, and none of them exhibit the same behavior.

On a specific page within the application, there are two panels: one displays a list of users, and the other displays details for the selected user.

The issue is that Firefox does not show a separate scrollbar for the user details panel. Instead, it only scrolls the page based on the height of the user list panel. As a result, when the user list contains fewer entries than the amount of information displayed in the user details panel, Firefox is unable to scroll through the entire details section. The hidden information still exists and becomes visible if the browser window is resized to be taller.

When the user list contains enough entries to make that panel taller than the user details panel, all user details are displayed correctly and scrolling works as expected because the entire page can be scrolled.

In Edge and other Chromium-based browsers, both panels have their own scrollbars. The scrollbar for the user details panel is only displayed when necessary, such as when the amount of user information exceeds the available space, but scrolling works correctly in all cases.

Is there anything that can be done to resolve this issue?

Unfortunately, the page is hosted on our company's internal network, so I am unable to share it.

The issue first appeared at the end of February this year. I believe I was using Firefox version 148 at the time. Prior to that, the problem did not occur. I am using Windows 11 and have tried the troubleshoot mode, which did not help.

With an older version, i was able to clear cookies after visiting secure sites(s) - now I can't find a way to do this. Please bring it back - I consider this to be extremely important for my security!

After reinstalling Firefox due to it being slow, no matter what settings, Firefox always opens and focuses on a new unwanted tab. But only if there are no extra tabs open except for my 5 pinned ones.

This behaviour started before I installed any Extensions.

How can I stop this?