What year did the Lutheran church break away from the catholic church?

The Lutheran Church broke away from the Catholic Church in 1517, when Martin Luther published his Ninety-Five Theses, challenging the practices and doctrines of the Catholic Church. This act is often regarded as the beginning of the Protestant Reformation. Luther's objections, particularly to the sale of indulgences, sparked a movement that led to the establishment of various Protestant denominations, including Lutheranism.