As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE AT FL410 PILOT HEARD A "BANG" AT WHICH POINT HE NOTICED THE LEFT SIDE FORWARD WIND SCREEN WAS CRACKED. AIRCRAFT SPEED, ALTITUDE AND PRESSURE DIFFERENTIAL WAS REDUCED AS PER THE AFM AND AN UNEVENTFUL LANDING WAS COMPLETED. SUSPECT CRACKING IS BELIEVED TO HAVE STARTED FROM LOCALIZED SHORTING / BURNING OF THE INTEGRAL ANTI-ICE ELEMENT.