Ole Gunnar Solskjaer says his Manchester United side need to find their "spark" again after they were held at Crystal Palace - a third goalless draw in a row for the visitors.
The Red Devils never really looked like scoring in a drab encounter at Selhurst Park, with their failure to win a blow to their already slim Premier League title hopes.
The result means Manchester United are 14 points behind leaders Manchester City, with the two sides meeting on Sunday.
Asked about his side's recent form, Solskjaer told BBC Sport: "Of course it's a concern.
"When you have three clean sheets in a row, that will help you win games - but we haven't produced the quality.
"We just have to find a spark again, the quality again and try to win the games."
Former Manchester United defender Gary Neville accused the team of "sleepwalking" and putting in performances that will give their top-four rivals a boost.
"It wasn't a good night for United," the Sky Sports pundit said. "It doesn't matter who's in charge, you can't be boring and that was boring.
"They are sleepwalking in games. They are going to end up in a top-four race if they are not careful."
The visitors dominated possession but struggled to create many meaningful chances, with Nemanja Matic going closest in the first half when he forced Vicente Guaita into a decent save.
Palace did not manage a shot on target until early in the second half when Jordan Ayew fired straight at keeper Dean Henderson after a good one-two with Christian Benteke.
However, the hosts almost pinched it right at the end when Patrick van Aanholt was put in on goal, but he was denied by Henderson.
The point for Crystal Palace moved them on to 34 points and 11 points clear of the relegation zone as Roy Hodgson's side edge closer to securing another season of Premier League football.
Latest Stories
-
Celestine Donkor speaks on report of undergoing weight loss surgery
4 mins -
Bright Simons: The SML defence “falls flat”
12 mins -
We need long term macroeconomic stability to build a strong and vibrant economy – Deloitte Boss
12 mins -
Adomaa Adjeman to make theatre debut as Aku Sika in Prof Martin Owusu’s epic
14 mins -
U.S. government supports Ghanaian partners to protect Intellectual Property
19 mins -
Eric Johnson
25 mins -
Tanzania denies abuse reports as World Bank halts funds
34 mins -
2024 polls: The person I defeated twice can’t succeed me – Akufo-Addo
40 mins -
NBA: Miami Heat beat Boston Celtics to even series
49 mins -
Two sentenced for stealing over 1,000 bags of rice
54 mins -
Zulu monarchy in row over king’s praise singer
58 mins -
Xavi to remain as Barcelona coach until at least June 2025
59 mins -
2Pac’s estate threatens to sue Drake over use of late rapper’s AI-generated voice
1 hour -
Yaw Nsarkoh: The President’s letter on the KPMG (SML) Report
1 hour -
Manasseh’s praise and criticism of Akufo-Addo’s action on the SML scandal
1 hour