The 35-year-old ranked third in the ski jumping phase in the first of two competitions in Kazakhstan on Saturday however he was to end third overall after the cross-country.
However he ensured the same thing didn't happen again in Almaty as he forced Akito Watabe of Japan to settle for the runners-up spot for the second successive time.
Bieler, whose last win was in a sprint race on home soil in Seefeld in Austria back in January 2008, beat Watabe by 4.4seconds while Miroslav Dvorak of the Czech Republic was third.
The top five prior to events in Almaty were all absent, seemingly opening the field up with Austrian Bieler consistently up there in the ski jumping phase.
After settling for third behind Mario Seidl and Taihei Kato on Saturday with a total of 121.3 points, Bieler turned the tide recording 136.4 for a lead he wouldn't relinquish.
His cross-country time was far from the best, 25:31.0minutes equal 21st quickest, but with Seidl and Kato not doing enough and Watabe's ski jumping not enough either, Bieler took the win.
Watabe scored 121.6 for his jump with the 59-second deficit between him and Bieler too much to overhaul as he finished just 4.4 behind the Austrian.
Dvorak placed eighth in the ski jump but battled to third 17.5 behind overall while Seidl and Kato were sixth and seventh respectively in Kazakhstan.
Once again World Cup leader Eric Frenzel isn't affected by the results nor is second-placed Jason Lamy Chappuis however Watabe did move up into the top five ahead of Tino Edelmann.
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