Forest suffered their heaviest loss under manager Dougie Freedman at Carrow Road, as they went down 3-1 to the Canaries.
Hosts Norwich went ahead on the stroke of half time when Jonny Howson fired past Karl Darlow, and doubled their advantage through Cameron Jerome on 56 minutes.
Wes Hoolahan made it 3-0 to Alex Neil’s side from the penalty spot just before the hour mark, rendering Chris Burke’s goal for Forest in the 76th minute nothing but a mere consolation for the visitors.
Lansbury started the encounter at Carrow Road and played for the entire 90 minutes, and he was understandably disappointed with the final result.
Earlier this evening, the 24-year-old posted the following message on Twitter:
Gutted about result today beaten by a good team great following again sorry about result get home safe and get ready to go again Nffc— Henri Lansbury (@lansburyhenri) March 21, 2015
Norwich were certainly the better team, as Forest produced arguably their worst performance under Freedman.
The Reds had just 36% of the possession, 10 shots of which six were on target, and six corners. The Nottingham-based outfit are currently ninth in the Championship table with 57 points from 39 matches, 10 points behind sixth-placed Ipswich Town.