One month after placing third in Valkenswaard, Schroeder secured victory in difficult conditions with his stallion London, Nabab de Rêve's offspring, who made a successful return to competition.
Heavy rainfall at the 'Vienna Masters', an event which combines a CSI 5* and a CDI3*, damaged the ground, particularly on Friday during the Vienna championship yet Schroeder was quick to make light of the conditions, placing second in that 1.50m class.
A day later he faced three other riders in a jump-off for the title: Luciana Diniz/Winningmood, Rölf Goran Bengtsson/Casall Ask and Harrie Smolders/Jackson Hole.
Sören Pedersen/Tailormade Esperanza de Rebel, Lauren Hough/Quick Study, and Edwina Tops-Alexander/Ergo Van Orti had narrowly missed out by incurring a time penalty point in the second round.
Diniz had eight points in the jump-off, while Bengtsson went quick in a time of 37.13, but with four points.
Harrie Smolders played safe, clearing in 44.30, while his compatriot Schroeder applied the opposite strategy - throwing caution to the wind to win in 36.65.
As sweet as victory was for Schroeder, the points scored were not enough to give him a good position heading into November's final leg of the season in Doha. After the 40 points won in Austria, he stands 17th in the overall rankings with 120 points.
American Laura Kraut still leads with 187 points, followed closely by German Christian Ahlmann (185) and Tops-Alexander (181).