Firefox Community Forum

For at least a few months now, my browser will suddenly and randomly go fullscreen all by itself. I can't exit it, and then it goes back to normal after at most a minute. It hasn't happened in at least a week. But today, it froze like that, not responding. I quit firefox, waited a bit, then restarted it. It went fullscreen and froze again. I waited at least 10min and it then went back to normal and responded again. It only happens when using firefox. I've done virus scans, etc, and it still keeps happening. Please help. Thanks.

Whenever I click any link that will play a video in a video playing website such as YouTube, Instagram or TikTok, it will cause the entire tab to glitch out and freeze in on the page it was on before I clicked the link.. The entire tab completely freezes and never unfreezes itself, with the cursor having whatever appearance it had when the page froze, and being unable to click anything. The only thing it can do is type a new URL into the search bar, but the search button/enter bar is also ineffective, so I'm stuck on a frozen webpage unless I close the tab or change to another one. I've tried troubleshooting, fiddling with the autoplay setting and turning off extensions, none of which worked. Any ideas?

Firefox version: 153.0.4 / Windows 11 25H2 26200.9168

Attached are images showing the performance settings and the active extensions in case any of them proves to be responsible for the problem.

Yesterday I noticed a horizontal screen tear when scrolling down through sites like X(Twitter), YouTube, GMail, Reddit etc. I immediately checked my performance options and they were deselected. I activated them again, but this did not solve the problem, I also tried to active some layers in about:config but those were already activated. Checked Nvidia settings too, vsync is on, Edge is not affected, Chrome is not affected, even installed Waterfox to see if only Firefox-based browsers are affected, but that one was OK too.

Last resort was to refresh the Firefox installation from the uninstall utility. After the refresh and all settings/extensions got auto-reinstalled, the screen tear got fixed. I left the PC running over night and when I accessed Firefox again this morning, the screen tear problem was back. However, now, the performance options are disabled, and if I try to enable them and restart Firefox, the options get disabled again.

Would really appreciate it if anyone could provide a solution that does not involve refreshing Firefox daily.

After updating to Firefox 138 on Windows 11, startup takes about 30 seconds. Safe Mode is faster. I tried refreshing and it did not help. Marked **bold test** and [a link](https://example.org) plus {{7*7}} literal check.

For the last four days every time I go to clear my history,"Program not responding" with a white a line at the top of the page with a message to close program or wait for response. I have tried restarting my computer with no change. If I close the program and restart I don't see a change. It seems to be intermittent. Please find out what is causing this glitch .

Thank you.

Hello, For about two or three days now, when I launch Firefox and try to open any website, it takes maybe one minute to load the page, then the navigation is OK on every website.

It only happens when I launch Firefox for the first time of my session. If I close it then relaunch it, it's still very swift.

I tried clear cache and remove cookies, just lost my logins lol but didn't work. I also tried with no extensions, nothing changed. Lastly I tried to set "network.captive-portal-service.enabled" to "false" in "about:config" but it didn't change anything neither.

So before I try anything else that could erase something on my profile, I'd rather ask here for some help :)

PS: running FF 153.0.4 on Debian Trixie with Mozilla repos. Only have two extensions: µblockOrigin and NoScript.

Thank you in advance!

Firefox 153.0.4 on MacOSX 26.5.2 on a 2021 M1 Macbook Pro.

2 finger scroll barely works, it's very laggy. Sometimes 3-5 seconds after the physical movement.

Change: Settings -> Displays -> Promotion (set back to 60hz) fixes it.

So far no messing with about:config settings has fixed things. Turning on / off smooth scrolling makes no difference. Turning on / off hardware acceleration doesn't change anything,

Seems like a recent bug.

Hi everyone,

Since updating to Firefox 129 on Windows 11, some tabs become unresponsive after my laptop wakes from sleep — no crash, no "Not Responding" warning, just frozen. about:processes shows the tab still running with ~0% CPU, so it's not hung, just not repainting.

Tried: disabling hardware acceleration (helps a bit), fresh profile (still happens), Troubleshoot Mode (less frequent but not gone).

Anyone else seeing this? Known WebRender/compositor bug tied to sleep/resume, or a Windows 11 power management conflict?

Thanks!

I have a Windows 10 Pro system and Firefox continues to open up at least 17 processes for one internet window. This eats up system resources for nothing more than general web browsing. How can these processes be limited? Thank you.

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)

Hi Team,

In Firefox, the close button is only partially clickable and is not accessible on the right side. However, when I hover over it, a square background appears around the button. Could you please take a look?

Thank you

Hi everyone,

After a recent series of updates to both my mouse and Firefox, my mouse no longer scrolls within Firefox. The mouse is Logi wireless mouse. Firefox is the latest version. The mouse scrolls fine in other apps, like WhatsApp, Outlook, Word etc. but not in Firefox.

When I try to scroll in Firefox, it stutters, jumps and will continue to jump even when I stop scrolling on the mouse.

I have spoken to Logi and there is no issue with the mouse itself.

I have tried Troubleshoot and Private mode, but still the same issue, so its not an add-on or extension problem.

Is anyone else having this issue over the last couple of days, or have any ideas on how to get back to smooth scrolling?

Thank you, Graham

Every thing will be working fine? And then I click on something, and it takes a long time. And then at the top of my prompt, it says Mozilla firefox is not responding. I've been dealing with this for some time now. You can't figure it out. This is happening on my computer. Also I would update it the program and the very next day.There's a prompt asking me to upload again. I upgrade, and then I still get the same thing.Mazilla is not responding.