[6] In 1483 and 1484, Vienna was already being cut off from the Holy Roman Empire because its concentric defensive strongholds, including Korneuburg, Bruck, Hainburg, and later Kaiserebersdorf, had all fallen.

On 15 January, Matthias called on the city to surrender, but Captain von Wulfestorff refused to do so, in the hope that an imperial relief force would arrive in time.

[8] The events angered his brother Tobias to the point that he ended up returning to the service of Frederick and was placed in charge of his campaigns to try to reconquer his lost lands after the death of Matthias in 1490.

Unable to build up sufficient food reserves as a result of the 1484 campaigns, exacerbated by the start of the winter siege (which made it impossible to sow the fields or build up additional food reserves), the city of 50,000 people faced severe famine by April, and the organisation within the walls began to organise for the opening of the city gates, which took place on 1 June.

[9] Five days later, the city councillors of Vienna swore an oath of allegiance to their new ruler, who took the title of Prince of Austria after his conquest.

[9] Matthias deprived Vienna of its staple right, which had so much violated the commercial interests of the nearby countries so much that they formed the Visegrád Group to secure a bypass route away from the city.

He rewarded Zápolya with the city of Ebenfurth[10] and appointed him as the captain of Vienna and governor of the Austrian provinces incorporated into Hungary.