By the end of the Middle Ages, migration of Eastern Orthodox Serbs towards Austrian lands was caused by expansion of the Ottoman Empire.

In 1479, emperor Friedrich III granted castle Weitensfeld in Carinthia to exiled members of Branković dynasty of Serbia.

Emperor Leopold I issued several charters (1690, 1691, 1695) to Eastern Orthodox Serbs, who sided with Habsburgs during the Vienna War (1683–1699), granting them religious freedom in the Monarchy.

Serbian Orthodox patriarch Arsenije III visited Austrian capital (Vienna) on several occasions, and died there in 1706.

[4] Serbian Orthodox metropolitan Isaija Đaković, who visited Austrian capital on several occasions since 1690, also died in Vienna, in 1708.