[2] In 1538, he compiled the first Index Librorum Prohibitorum in the territory of Italy, published by the Senate of Milan.

In this effort of reformation, he also approved the theological works of Battista da Crema [it], later condemned by the Inquisition.

[3] He entered in conflict with the archbishop of Milan, Giovanni Angelo Arcimboldi, appointed in 1550 and who wanted take control of the inquisition.

Crivelli was not confirmed as suffragean (auxiliary) bishop by the Arcimboldi,[5] and in 1553 he was dismessed as General Inquistor by the Roman Curia.

He died in Milan in a day between 19 August and 7 October 1561,[5] and was buried in the church of Sant'Eustorgio, where his headstone is still present.