Microscopic entropy of the most general four-dimensional BPS black hole

In a recent paper we have given the macroscopic and microscopic description of the generating solution of toroidally compactified string theory BPS bl ack holes. In this note we compute its corresponding microscopic entropy. S ince by definition the generating solution is the most general solution mod ulo U-duality transformations, this result accounts for the degeneracy of m icrostates determining the entropy of any regular BPS black holes of toroid ally compactified string (or M) theory.