The Red Devils have stuttered since replacing Sir Alex Ferguson with former Everton boss Moyes, languishing down in seventh place in the Premier League table as well as suffering a third-round exit from the FA Cup.
Vidic is refusing to blame the arrival of a new manager at Old Trafford, however, insisting that the players' primary aim is to win trophies, regardless of who is in charge.
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"Those expectations come from the players, the club, the fans as well as the manager. At United there is always a demand to win games and win trophies."
The United skipper, whose agent has suggested could leave the club when his contract expires in the summer, bemoaned his side's tricky start to the season that saw them face the likes of Chelsea, Liverpool and Manchester City before October.
"We had a tough start in the Premier League, we didn’t hit that winning run and get our rhythm which would have given us that confidence," he said.
"The manager was very open from the minute he came here. He knew exactly what he wanted to do and achieve. We had some good training sessions and preparation in pre-season.
"The manager is a good character. He talks and encourages people. But it’s up to the players too. We are a group and it’s the group’s responsibility to deal with situations. But I didn’t expect it to be this crazy."