The Rossoneri CEO was caught on television cameras expressing his displeasure at Abbiati after he allowed Gokhan Inler's shot to go past him in the fourth minute.
"As far as I am concerned, nothing has happened," the goalkeeper told Mediaset. "I didn't even know about it until Galliani phoned me.
"I know that Galliani loves me and we have a special relationship. He told me that it was all forgotten after just a second."
Milan are currently 12th in Serie A with 15 points from 13 matches.