The Canaries boss believes that his side were excellent against the Red Devils and finds the narrow defeat difficult to endure
A Danny Welbeck goal shortly after half time was the difference between the sides and Hughton believes that the Canaries deserved more from the encounter.
"In that first half period we were excellent against the quality that they've got," Hughton told reporters after the game. "But when you have your dominant moments in the game, you've got to capitalise on them."
He added: "They were quick on the counter-attack but we limited them to minimal chances, and of course it's a very fortunate goal that they score.
"It's hard to take because we certainly deserved more than what we got."
Norwich have failed to win a league game since December 7, a 2-0 victory over West Bromich Albion, and the defeat at home to Manchester United is their second consecutive defeat.
Nevertheless, Hughton was keen to accentuate the positives from the game, placing an emphasis on the high level of performance from his players.
"We've certainly lost the momentum with regards to winning games and getting points," conceded the 55-year-old.
"But we've picked up momentum with our performance today because anyone who was at the game today will have seen that, particularly in the first half, we were excellent."