Noren held an insurmountable 11-shot lead heading into Sunday's final round, and had a chance to set new standards for margin of victory in the tournament as well as lowest under par after 72 holes.
But the windy conditions on his home Bro Hof Slott Golf Club prevented that, and the 29-year-old settled for a 5-over 77, seven shots better than his closest competitor, Richard Finch, at 15-under 273.
Noren earned his second win in six events and became the fifth Swede to win the Stockholm event.
Finch, meanwhile, posted the lone round under par (3-under 69), at one point shaving eight strokes off his deficit.
Alone in third was Niklas Lemke (73) at 5-under 283, while Scott Hend (74) and Pablo Martin (74) shared fourth at minus-4.