On 23 September 2018, Queiroz extended his contract until the 2019 AFC Asian Cup, hoping to win Iran's first continental title since 1976. With wins over Yemen and Vietnam, and a draw with neighbours Iraq, Iran won Group D and progressed to the round of 16, where they met the third-placed team from Group F, Oman. A 2–0 win over Oman set up a quarter-final against China, whom they beat 3–0. However, in his 100th match in charge of Iran, the semi-final against Japan saw Queiroz's team concede their first goals of the tournament, all in the second half, losing 3–0. After the match, he left "Team Melli".