 Once crowned emperor, Henry departed from joint rule with the princes and resorted to earlier Salian autocratic rule.After he had failed to increase control over the church, the princes in Saxony and on the Middle and Lower Rhine, in 1121 the imperial princes forced Henry V to consent with the papacy.He surrendered to the demands of the second generation of Gregorian reformers, and in 1122 he and Pope Callixtus II ended the Investiture Controversy in the Concordat of Worms.