Product Firefox Release Channel release Version 63.0.3 Build ID 20181114214635 OS Windows 10 OS Version 10.0.17134

bp-6d02845e-be73-4dba-9a21-569890181127 Signature: guard64.dll@0x49bb

Crash Reason EXCEPTION_STACK_BUFFER_OVERRUN

guard64.dll = Internet Security Essentials = COMODO

KERNELBASE.dll = Microsoft

rpcrt4.dll = Windows; Remote Procedure Call Runtime

combase.dll = Microsoft

This is for Sumo's Related Bugs 1407712 NEW --- Crash in guard64.dll@0x49bb (Comodo Internet Security DLL)

Update your Comodo Internet Security. If the problem continues, disable it.

Thank you! I uninstalled Nd reinstalled Comodo and Firefox works now! Thank you!!!

Glad to help. Safe Surfing.