In our timeline, Henry V proved himself to be a strongheaded leader both politically and militarily having success in foreign and domestic policies and victories on the Battlefield; most notably while being outnumbered at the Battle of Agincourt. He was able to secure the Treaty of Troyes in 1420, recognising Henry and his descendents as the heirs to the French Crown upon Charles VI's death. He sealed the treaty by arranging a marriage with Charles' daughter, Catherine of Valois from which resulted in a son fairly quickly. He would grow up to become Henry VI. Two years later, Henry V would die of dysentry out in France and would never be able to affirm his son's ascension to the French Throne. Henry VI was de jure the King of France but would never ride the aspirations that his father had, inevitably surrendering the crown to the French Pretender, Charles VI's son, Charles VII.
In this timeline, Henry returned to France upon hearing of his brother's defeat and execution. He retired early from the siege of Meaux after large scale outbreaks of dysentry and smallpox within the English camps. Arthur III of Brittany, who assissed him during the siege, took leadership after Henry retired to Senlis. He was bed ridden but was able to make a full recovery shortly after the Battle of Verneuil.
By not dying from dysentry, Henry was able to outlive Charles VI and was successfully crowned the King of France at Reims in 1425.