The Dutchman, 52, has only just taken over the club as manager, having left Ajax at the end of last season, but the hosts were quick to tease him during the pre-season friendly.
The Premier League side went into the clash against Melbourne Victory on the back of an emphatic 4-0 victory over Liverpool in Bangkok on Tuesday.
However, things didn't look as rosy when Chris Ikonomidis gave the hosts the lead inside five minutes.
Aussie fans were then heard chanting "you're getting sacked in the morning", in the direction of Ten Hag before his competitive tenure has even started.
The United boss went with a strong line-up for the clash, suggesting he is wasting no time in finding his starting XI ahead of the new season.
He made just three changes to the side that beat Liverpool, with goalkeeper Tom Heaton coming in for David de Gea, Harry Maguire replacing Raphael Varane in defender, and Anthony Elanga coming in for Marcus Rashford on the left wing.
Maguire's inclusion will come as a positive boost for the England international, with Ten Hag keen for him to continue as captain.
Despite the chants, United managed to come from behind before half-time and eventually won the game 4-1.
Scott McTominay put the Red Devils on level terms with a deflected effort, and Anthony Martial put them in front before the break.
The Frenchman now has two goals in two games so far in pre-season and looks to continue impressing his new boss, as he aims to cement a shock place in the side ahead of new season.
Meanwhile, in the second period Marcus Rashford got on the scoresheet with help from a fine assist from Eric Bailly, and a Tahith Chong was turned home by Melbourne Victory defender Edmond Lupancu to complete the scoring.
Former Ajax boss Ten Hag will be under pressure to perform, with United enduring a miserable sixth-place finish last term but these results will help him settle in.