As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS WINDOW CAME OPEN ON T/O ROLL AFTER PASSING 80 KTS. PRIOR TO T/O HANDLE WAS VERIFIED IN LOCKED POSITION. ABORTED T/O ROLL AT 100 KTS. MTC VERIFIED OPERATION AND LOCKING MECHANISM WORKS OK. PERFORMED HIGH ENERGY STOP INSPECTION. ALL NORMAL.