The present invention relates to active compound combinations comprising 2-[6-(4-bromophenoxy)-2-(trifluoromethyl)-3-pyridyl]-1-(1,2,4-triazol-1-yl)propan-2-ol, at least one fungicide selected from specified inhibitors of the ergosterol synthesis and fungicides capable of having a multisite action, and at least one further fungicide selected from inhibitors of the respiratory chain at complex I or II and specified inhibitors of the respiratory chain at complex III, to compositions comprising such compound combination, and to the use thereof as biologically active agents, especially for control of harmful microorganisms in crop protection and in the protection of industrial materials.