His ascension was confirmed by Mahmud of Ghazna, in exchange for a promise that tribute would continue to be paid by the Ziyarids.
In 1032, however, Anushirvan's army chief and maternal relative Abu Kalijar ibn Vayhan effectively took control of the state.
Mahmud's successor Mas'ud recognized this change upon being assured that the tribute would still be paid, and in 1033 married one of Abu Kalijar's daughters.
When the Ghaznavids left, however, Abu Kalijar regained control of the state and made peace with Mas'ud, promising to pay the tribute.
Toghril Beg installed a former Ghaznavid commander, Mardavij ibn Bishui as governor of the region.