Marc Janko scored in the 33rd minute after lax defensive marking, and the United States ended a record-setting year with a 1-0 loss to Austria.
Hungarian referee Istan Vad failed to allow a goal for the United States when Geoff Cameron's header off Michael Bradley's corner kick deflected off an arm of Marko Arnautovic and appeared to cross the goal line in the 17th minute before it was swatted away by goalkeeper Robert Almer.
''It was a goal, or it was a handball and we should have got a penalty,'' U.S coach Jurgen Klinsmann said. ''It's a friendly game so I don't want to make a big deal of it. But you have to ask why we are in 2013 and have no goal line technology. It's just a joke.''
Janko's 16th international goal, started by David Alaba's attacking move, came off a cross from Gyorgy Garics and ended a 453-minute shutout streak in international and club play for Howard, Everton's starter.
The U.S. finished the year with a team-record 16 victories and qualified for its seventh straight World Cup. Austria failed to qualify for next year's tournament in Brazil. The Americans tied 0-0 at Scotland on Friday.
''It was a good 10 days, good to see the players compete in training and these two games,'' Klinsmann said. ''You learn a lot about the guys when they are in a training camp.''
Martin Harnik put a curling shot past Howard in the 49th minute, but was offside when he collected a pass from Christian Fuchs.
Jozy Altidore came closest to tying the score, but his low shot in the 74th was saved by Almer. Altidore also sent a free kick wide in the closing minutes.
''Over both wings we didn't create enough chances,'' Klinsmann said.