Kronenberg financially supported the January uprising of 1863 against the Russians. After the failure of this revolt, he became a representative of the "white" faction that favored a compromise with the Russians. In 1870, Kronenberg founded Bank Handlowy, the commercial bank of Warsaw, and in 1875 he founded the Warsaw School of Economics. He also founded the Credit Corporation of Warsaw, Industrial Cashier, Warsaw Fire Insurance Company, Coal Mine Association and Metallurgical Works.