Kapur, who has been unwell since Thursday had rounds of 74, 68, 74 and 76. He had four bogeys and no birdies on the final day.
Matthew Fitzpatrick won his second European Tour title at Bro Hof Slott Golf Club as he eased to a three-shot victory at the Nordea Masters.
The Englishman came into the final day with a five-shot advantage and even though he saw that cut to two around the turn, he kept his head on the back nine to sign for a 71 and get to 16-under and hold off the challenge of Lasse Jensen and Nicolas Colsaerts.
For Colsaerts it was a second top three finish in four events as he gets back to his best after a disappointing 2015 and his hopes of claiming a spot at the year's third Major Championship disappeared when he put his tee-shot on the 17th in water.
Home favourite and world No. Six Henrik Stenson fired the lowest round of the day with a 66 to finish at 10-under alongside fellow Swede Bjorn Hellgren, with England's Ross Fisher a shot further back.