 From January 1943 to October 1944 he was HSSPF for district XVII, based at Vienna.On 21 June 1943 he was promoted to SS-Obergruppenführer and on 1 July 1944 to General of the Waffen-SS.Following the 20 July plot Querner's district undertook harsh measures against any possible revolution, although Querner had delegated authority in this instance to his subordinate Heinrich Kodré.