 He offered little resistance to Lutheranism in Münster, though he vigorously opposed the Anabaptists; after 1543 he allowed in Osnabrück an evangelical service.However, the chapter and the Dominicans opposed a German service that dispensed with all the characteristics of the Roman Catholic Mass.In 1548, Bishop Franz promised to suppress the Reformation in Osnabrück and to execute the Augsburg Interim, but fulfilled his promise very indifferently; on his deathbed he received Lutheran communions.