He thence reigned uninterrupted until his death. His reign was a troubled one. In 703, Faroald, duke of Spoleto, attacked the Exarchate of Ravenna, but Aripert refused to assist him, for he wanted good relations with papacy and empire. He tried nevertheless to assert his authority over Spoleto and Benevento in the Mezzogiorno. He nursed friendship with Pope John VI by donating vast tracts of land in the Cottian Alps to the Holy See. This friendship helped him little, for he had many rebellions to deal with and many Slovene raids into Venetia.
In 711, Ansprand, whom he had exiled, returned with a large army from the duke of Bavaria, Theudebert. Many Austrians (the men of Venetia and the east) joined the returning regent and battle was joined by Pavia. Aripert fled to his capital when the tide went against him, but he hoarded the treasures and tried to cross over into Gaul by night. He drowned in the River Ticino and Ansprand was acclaimed sovereign. He was the last Bavarian to wear the Iron Crown.