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.

philipp said

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.

Hey phillip, my last report id´s were : bp-7747b357-67af-4cac-8e5c-8930b2161025 at 25.10.2016 11:52 bp-cec0eaa4-f2b8-4351-bcb7-0789f2161025 at 25.10.2016 11:52

thanks, those two are crashes with the flash plugin from back in 2014, so they won't be related to the current crashing problem i'm afraid :-/

philipp said

thanks, those two are crashes with the flash plugin from back in 2014, so they won't be related to the current crashing problem i'm afraid :-/

I copied you some of the information Windows gives you when a program crashes, maybe that can help you (its all in german) :

Beschreibung:

 Aufgrund eines Problems kann dieses Programm nicht mehr mit Windows kommunizieren.

Problemsignatur:

 Problemereignisname:	AppHangXProcB1
 Anwendungsname:	firefox.exe
 Anwendungsversion:	49.0.2.6136
 Anwendungszeitstempel:	5807b9c5
 Absturzsignatur:	6682
 Absturztyp:	134217792
 Auf Anwendungsnamen wird gewartet:	 dllhost.exe
 Auf Anwendungsversion wird gewartet:	0.0.0.0
 Betriebsystemversion:	6.3.9600.2.0.0.256.48
 Gebietsschema-ID:	1031
 Zusätzliche Absturzsignatur 1:	66828ed6131994ccb8900bfcbbe6d788
 Zusätzliche Absturzsignatur 2:	de1e
 Zusätzliche Absturzsignatur 3:	de1e2927108aab2777c319f6129b7b5c
 Zusätzliche Absturzsignatur 4:	6682
 Zusätzliche Absturzsignatur 5:	66828ed6131994ccb8900bfcbbe6d788
 Zusätzliche Absturzsignatur 6:	de1e
 Zusätzliche Absturzsignatur 7:	de1e2927108aab2777c319f6129b7b5c

unfortunately this only contains very generic information. so all that i could advice is to make sure that firefox isn't getting sandboxed by any security tools and is marked as a trusted program there and uninstall all programs that might hook into windows explorer and expand the functionality there...

and in addition you could try to run a scan with various other security tools like the free version of malwarebytes, adwcleaner & eset online one-time scanner.