 That same year he was appointed First Counsellor and Director-General of the Dutch East Indies.On 17 December 1690 van Outhoorn was appointed Governor-General of the Dutch East Indies, taking over from Johannes Camphuys on 24 September 1691.After ten years, the Seventeen Lords (Heren XVII) granted his wish to be honourably relieved of his duties, but it was 15 August 1704 before he could hand over all his official functions to his successor, Joan van Hoorn.