Hauser had only one boom in the third shot in the light snowfall and was fast on the track.
That was enough for the first individual win in the World Cup for 27-year-old Hauser, who made his debut just over eight years ago.
Hauser has really gained momentum in his career.
The first individual podium place in the World Cup did not come until January 8 this year in Oberfhof.
Two booms by Hanna Öberg in the first shot and the expectations of a top position disappeared at once.
There was another boom and Hanna Öberg was 3.21 behind Hauser.
- The ride is really worrying today, says Helena Ekholm about the Swedish team's efforts.
Only Linn Persson in 14th place with two booms made an approved effort.