As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABORTED TAKEOFF. CAPTAINS SLIDING WINDOW OPENED. WINDOW RIG OPS CHECKED OK. WINDOW SEAL, LOCK ASSEMBLY AND HANDLE INSPECTED AND FOUND SERVICEABLE. HULL WAS PRESSURIZED WITH NO LEAKS NOTED. SUSPECT WINDOW WAS NOT FULLY CLOSED AND LOCKED.