Wasu manyan 'yan kasar Hungary sun ba da shawarar cewa Ferdinand, wanda shi ne mai mulkin makwabciyar kasar Austriya kuma aka ɗaura shi da dangin Louis II ta hanyar aure, ya zama Sarkin Hungary, yana mai nuni da yarjejeniyar da ta gabata cewa Habsburgs za su ɗauki kursiyin Hungarian idan Louis ya mutu ba tare da magada ba.Duk da haka, wasu manyan mutane sun juya zuwa ga mai martaba John Zapolya, wanda Suleiman ke goyon bayansa.A ƙarƙashin Charles V da ɗan'uwansa Ferdinand I, Habsburgs sun sake mamaye Buda kuma suka mallaki Hungary.Zápolya ya ƙi ya daina iƙirarin da ya yi a kan karagar Hungary don haka ya roƙi Suleiman don karɓe shi don karɓar haraji.Suleiman ya karbi Zápolya a matsayin wazirinsa a watan Fabrairu kuma a watan Mayu 1529 Suleiman ya fara yakin neman zabensa. A ranar 26-27 ga Agusta Suleiman ya kewaye Buda kuma ya fara kewaye.An lalata bangon ta hanyar harbin bindiga da harbin bindiga na Ottoman tsakanin 5 zuwa 7 ga Satumba.Shirye-shiryen soji, hare-haren da ba a yanke ba, da kuma lalata ta jiki da ta hankali da makaman Ottoman suka haifar sun yi tasirin da ake so.Sojojin hayar Jamus sun mika wuya tare da mika katangar ga Daular Usmaniyya a ranar 8 ga Satumba.An nada John Zápolya a Buda a matsayin mataimakiyar Suleiman. Bayan cin nasarar Ferdinand an yi wa magoya bayansa alkawarin za su tsira daga garin, amma sojojin Ottoman sun yi musu yankan rago a wajen katangar birnin.