With virtually the last touch of a disappointing game, Casemiro floated a cross to the far post. Substitute Rashford climbed highest but his effort went wide of the far post.
A goal at that point would have been harsh on Newcastle, who came close to securing only their second victory at Old Trafford since 1972 but after Joelinton’s first-half header had hit the bar, the Brazilian failed to head the rebound into an empty net.
The hosts’ frustrations were summed up by Cristiano Ronaldo.
The Portuguese striker, who had two second-half efforts disallowed, shook his head in irritation when he was replaced by Rashford 18 minutes from time.
He carried on chuntering to himself and shaking his head until he reached the dug-out, when he slumped down in simmering discontent.
Sadly for Ten Hag, the Dane missed his first Premier League game of the season through illness and without him, Manchester United lacked creativity.
It was deep into the opening period before Antony forced Nick Pope into his first meaningful save and that came at the end of a Jadon Sancho-led counter-attack.
The home side did get the ball in the net twice in as many minutes after half-time but in both instances, Ronaldo’s effort was ruled out.
The first was clearly offside. The second was more debatable.
Ronaldo and his team-mates argued Fabian Schar had rolled a free-kick back to Pope and therefore the ball was in play. Pope did not move as Ronaldo closed in, suggesting he thought the kick was still to be taken.
Referee Craig Pawson sided with the England keeper, so Ronaldo nipping in to get the ball and tap into an empty net only brought him a yellow card.
Evidently Ten Hag was not impressed with Pawson’s performances judging by the way the Dutchman marched towards the official at the final whistle.