As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE FLIGHT CREW SELECTED GEAR UP BUT THE HANDLE DID NOT MOVE, GEAR REMAINED DOWN AND LOCKED. CREW GOT A LANDING GEAR AIR FAIL MESSAGE ON EICAS. AIRCRAFT RETURNED TO IAH. MAINTENANCE INSPECTED AND REMOVED AND REPLACED THE RIGHT MLG FWD PROX SWITCH CONNECTOR, CLEANED THE FWD NLG PROX SWITCH CONNECTOR. GEAR SWING AND OPS CHECK WERE GOOD.