As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL400, OBSERVED ARCING ON THE LT FWD WINDSHIELD & THEN IT SHATTERED. LT FWD WINDOW EICAS DISPLAYED & LT FWD WINDOW HEAT SHOWED INOPERATIVE. REMOVED NR 1 CAPTAIN`S WINDOW IAW MM 56-11-01-4. ALL OPS CHECKED NORMAL IAW MM 30-41-01-4. ACFT OK FOR SERVICE. WINDOW INSTALLATION COMPLETE IAW MM 56-11-01-4.