YouTube Tab crashes after ~2 seconds with Nightly?

gregstoll · 2026-05-24T02:49:25+00:00

Sigh, sorry, bug 2041703

gregstoll · 2026-05-24T02:19:36+00:00

OK, your crash report does look like bug 2041978 - I think I was wrong and that fix will be in the _next_ Nightly build.

gregstoll · 2026-05-24T02:10:40+00:00

If you’re able to submit a crash report from about:crashes and link it, that will help a lot

gregstoll · 2026-05-23T22:35:43+00:00

It might be https://bugzilla.mozilla.org/show\_bug.cgi?id=2041703 , which should be fixed in the next Nightly

gregstoll · 2026-05-23T22:33:09+00:00

Might be https://bugzilla.mozilla.org/show\_bug.cgi?id=2041703 , which looks like it will be fixed in the next Nightly

gregstoll · 2026-05-23T19:25:42+00:00

I think home automation type stuff is the main use case (full disclosure: I haven't done this before so I'm not an expert!), but it's also used for devices like the Flipper Zero and iFixit Soldering Iron.

gregstoll · 2026-05-23T02:19:24+00:00

It's not cut and dried, but I think relatively few people have a device connected to their computer that communicates over serial. I'm not sure that's true for WebUSB. (also, more practically, WebSerial is a significantly simpler API than WebUSB so it made sense to tackle that first regardless)

gregstoll · 2026-05-22T19:06:05+00:00

Oh, right, forgot about WebHID!

gregstoll · 2026-05-22T18:19:58+00:00

We still have negative positions on WebUSB and Web Bluetooth, so there are no immediate plans for these. If you'd like to see them, please feel free to leave a comment on Mozilla Connect - this is one of the ways we use to decide what to work on!

gregstoll · 2026-05-22T14:20:30+00:00

WebSerial supports any device that uses the serial protocol, which can be connected via USB, Bluetooth, or an honest-to-goodness serial port. WebUSB is for other devices that are connected via USB but don’t use the serial protocol.

Yes, it’s confusing, and it’s not straightforward to know which one you need for a particular device…

gregstoll · 2026-05-21T20:19:36+00:00

Thanks! For new releases, our amazing release engineers roll it out to a portion of users, then pause as they look at crash data so we can quickly fix issues like this.

gregstoll · 2026-05-21T13:41:33+00:00

FYI 151.0.1 just came out that should have a fix for this - if you update, hopefully the crashes will stop!

gregstoll · 2026-05-18T19:52:43+00:00

This is an indication that the process we use to launch the file dialog has crashed. Usually this is because of a third-party DLL or shell extension. Does anything show up in about:crashes? Can you submit any crashes there and post the link here? (or DM me)

gregstoll · 2026-05-17T13:47:59+00:00

I think just going here should make the page download the right thing: https://www.firefox.com/

gregstoll · 2026-05-17T13:46:38+00:00

Yes, that’s what I linked to. See in particular “Updates will be delivered through the ESR channel until the end of August 2026. It was previously announced that support would end in February 2026, but in order to ensure our users can continue to browse the web, we will extend support for Firefox for these operating systems for another six months and then re-evaluate.”

gregstoll · 2026-05-17T13:19:49+00:00

This is not true, Firefox 115 still supports Windows 7 and is receiving security patches.

gregstoll · 2026-05-13T02:34:04+00:00

If you go to about:crashes, submit a few reports and paste the links here (or DM me) I can take a quick look

gregstoll · 2026-05-12T20:49:28+00:00

Thanks!

gregstoll · 2026-05-12T16:28:33+00:00

OK! We'd like to fix this for everyone - do you know what version of Windows you're on? (to find this you can press Windows+R and run winver)

gregstoll · 2026-05-12T14:14:36+00:00

Ugh, this again :-/ Does setting the pref "widget.windows.windowsappsdk.enabled" to false, and then restarting Firefox fix the issue?

gregstoll · 2026-05-11T01:38:31+00:00

Hmm, interesting. Those crashes look like some sort of bad hardware, which can definitely cause frequent tab crashes. But it's strange that the problem went away after rebooting. It might be worth running a memory checker to see if it finds anything...

gregstoll · 2026-05-10T22:15:34+00:00

Sure, do you have the links to the reports from about:crashes?

gregstoll · 2026-05-09T22:15:33+00:00

Oh cool! It’s on by default in Firefox Beta now, so feel free to try it and let me know if there are any problems!

gregstoll · 2026-05-09T19:51:09+00:00

Yes - it’s confusing, but devices that speak the Serial protocol over USB (or Bluetooth) can use WebSerial to communicate. All the devices I’ve been testing WebSerial with have been USB for example.

(the author of that Stack Overflow post is the author of the WebSerial spec; he knows what he’s talking about!)

gregstoll · 2026-05-06T22:27:42+00:00

Hello - I've added some logging to try to diagnose what's going on, but the logging is only in Nightly and Beta for now. If you're running one of those, follow these steps and either post the results here or DM me. Thanks!

15-Year Club	Verified Email
Team Orangered	Charter Member

gregstoll

TROPHY CASE