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I started noticing that Firefox was giving me a lot of "not responding" freezes the past couple of weeks. The past couple of days I basically cannot access Firefox at all - constant, immediate freezing. I have tried uninstalling/reinstalling (multiple times), disabling hardware acceleration, running troubleshooter mode (still freezes! if it opens at all!), deleting profiles, restarting my computer, etc. I've done just about everything I can find online about this issue. Nothing has worked. I have no issues with Chrome or Edge.

Any suggestions??

Hello! Since the latest update to Firefox (153, I believe) my Firefox has not worked. It starts up perfectly fine, but quickly freezes, becomes non-responsive, and needs to be closed. No matter how many times I attempt to open it, the same thing occurs. There’s been been occasions where it hasn’t frozen immediately so I have been able to turn off hardware acceleration as well as remove my theme and disable all my add-ons/extensions, but this has done nothing. Creating a new profile does not help, nor does trying Safe Mode: the same thing happens no matter what. I tried to reinstall the update, but this also did nothing. I haven’t yet tried to uninstall & reinstall or do a Firefox refresh as those are my last resorts and I won’t do them unless I’m sure they’ll make a difference. I haven’t downloaded any new extensions recently, and this only started happening after the most recent update. I’m not sure what else I can try at this point, and am very frustrated.

Firefox freezes some seconds or some minute after I open the program, I end task and wait to reopen the program, opening up the program it continues to freeze. I've reset firefox multiple times, cleared cache & webdata, completly uninstalled FF and reinstalled it, doesn't solve it. Starting firefox in troubleshooting mode also freezes and hangs. After end tasking firefox multiple times it eventually stops freezing but during the next day when I open the browser the issue returns, The same goes after I reinstalled it after uninstalling it, works for the rest of the day but the next day the issue returns. Background: I switched from chrome to Firefox some months ago and imported webdata from chrome to FF.

Hi, I have a Xiaomi Rednote 10 pro mobile phone. I have been a longstanding user of Firefox on numerous devices.

However I am having real difficulties on my phone when switching away from the app and returning (for example to check a code for MFA). I have checked battery settings (unrestricted), background autostart (enabled). I've tried locking the app in the recent processes list, in developer settings "don't keep activities" is off and background processes is set to standard limit.

Even with only 1 other app in memory every time I activate another app and return the page reloads and I lose what I was doing.

I've tried uninstalling and reinstalling and have the most recent update.

Other browsers on my phone such as Chrome do not exhibit this behaviour - when I switch apps and back again the page in the browser is retained.

Is this a known fault with this type of phone? Am I doing something obviously wrong? Any help you can provide would be greatly appreciated.

I have tried safe mode. No joy, but it has shown plain vanilla FF is the issue, not extensions.

(I'm using a different browser to make this report, so Share Data button is of no use here.)

My Firefox browser was updated to the most recent version (153.0). And since then, it will always freeze up within a few minutes of me opening it, even in troubleshooting mode. Even if I keep clicking, it’s still stuck and I’m forced to close it.

I did turn off hardware acceleration before, and it still doesn’t work.

My keyboard is stucking while searching on firefox , even after pressing enter it doesn't goes i had tried with floating keyboard it doesn't stucked, also tried with another keyboard and address bar at bottom it doesn't get worked, please solve this problem or i would shift to another browser

Recently (past few weeks) I’ve found Firefox on my iPhone (iOS 26.5.2) has stopped loading. I’ll open the app and it won’t load the page at all. It also doesn’t let me reload the page, add tabs, or close tabs. Occasionally it will fix if I click a link from an SMS or something that then opens in the app. Quitting Firefox doesn’t work, restarting my phone also doesn’t work.

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)

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

I have notice when there are multiple tabs open and multiple extension running the app seem to lag with page reloading ( youtube, google, insta)

Also PIP for youtube is broken with maybe hyperos 3 Youtube controller or browser customize controller for youtube

Kindly check that

I have realised if browser is optimized well then it can replace many social media app with more privacy and customization

Device Xiaomi 17 ultra Os- hyperos 3.0.2.0 WPAINXM Android version: 16BP2A.250605.031.A3

while other engins like Google and edge are very quick, firefox has been slow and then stops on android s21. clearing all app cache and cookies makes no difference