Manchester United manager David Moyes insisted he will be a success at the club after steering his side to a
Moyes, 50, replaced Sir Alex Ferguson at Old Trafford in the summer but has had a testing start, with his side in eighth place in the Premier League.
After beating Liverpool to earn a fourth-round tie with Norwich he said: "It's not frustrating. I will sort it.
"I will fix it. I will turn it round. I have no doubt about that."
Moyes saw his side lose to Liverpool and be thrashed 4-1 by rivals Manchester City in a difficult opening start to the Premier League, but has now won five of his first eight games in all competitions - the best start of any new United manager since Matt Busby in 1946.
"Everybody seems to be picking a stat out - I have not won here or I have not done that," former Everton boss Moyes said. "That is one of the good stats.
"I have not had that many good ones. But that is one of the better ones.
"It was a big game for us. We had lost at Anfield a few weeks ago and at the Etihad on Sunday and we wanted to put that right."
Javier Hernandez's goal was enough for Moyes' side to beat Liverpool at Old Trafford, with United hosting West Brom in the Premier League on Saturday.
"Every game is either a first for something or it is a monkey off my back. It is going to be the way, isn't it?" said Moyes.
"Liverpool have started the season well, so to get a result was good."