hello, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply. this will give us a better understanding what may be triggering those crashes.

Here you go. Just made a fresh one. Facebook lasted about 3 seconds.

Just to mention after I made my post I completely uninstalled and completely deleted all the info in my FF folder then reinstalled FF. Tried again without importing any of my old data just to see if something was an issue there. But it didn't work. So back running with my original data again.

bp-8949e8a3-58d0-4bdd-9650-cbfa40180627

thanks, it looks like malwarebytes anti-exploit plays a role in this crash - you might want to disable it or look into its settings...

I shut down Malwarebytes.... rebooted FF. Same issue :-(

can you please include the report's id that happened without mbae, thnx...

0b25a193-9aba-4b63-9991-e4adb85ddbff

bp-f5502f0c-9f5a-4a34-b0e2-fa5140180627

thanks, unfortunately this does still show involvement of malwarebytes anti-exploit. if shutting it off alone isn't enough please try totally uninstalling it once for testing purposes.

Well, I've never looked at these before but I assumed you meant lines 13 and 14 under the 'Crashing Thread (64), Name: MediaPlayback #1' area.... mbae64.dll...

These are not listed in the new crash log.... it ends with msmpeg2vdec.dll

What indicates malwarebytes?

As a side note I've ran MWB and Norton together for years with Firefox... These problems just started with my new build.

if you click on show other threads or the modules tab "mbae64.dll" is still there. i'm not a 100% sure that it is the root of the crash, but it's certainly worth testing how firefox is behaving without it...

Doh! Didn't even notice all the tabs on top. I have to head out for a couple hours so I'll have to continue on this later and try what you said. In the mean time if you think of anything else it could be please let me know... Like I said I've been using them together at least 5 years with no issues... but you never know.

Thanks.

Can you see if this worked. I shut down malwarebytes. Disabled startup in msconfig Rebooted

Same problem in FF bp-3c4255ab-badc-43b8-8e0e-77de60180627

Trying to avoid uninstalling MB if I don't have to.

Thanks.

does the facebook tab still crash when you make this configuration change?

enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named media.wmf.enabled. double-click it and change its value to false.

philipp said

does the facebook tab still crash when you make this configuration change? enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named media.wmf.enabled. double-click it and change its value to false.

I was just about to post another crash log when your post came... because YouTube can be troublesome with this as well.

That seems to have fixed the situation! THANK YOU!!

Just out of curiosity can you tell me what that setting actually does?

this preference disables firefox handing over media content to the "windows media foundation" part of the operating system for playback, because firefox itself is lacking the decoding support for some non-royalty free formats like h.264. so having this pref disabled in general might lead to problems playing back some form of media contents on the web.

i don't entirely understand in which way your crashes where triggered, but you could try switching back media.wmf.enabled to its default and instead playing around with those other prefs to see if one of them also would solve the issue:

• media.wmf.dxva.d3d11.enabled
• media.wmf.dxva.enabled
• media.wmf.low-latency.enabled
• media.wmf.use-nv12-format
• media.wmf.vp9.enabled