This article discusses the occurrence of high frequency interactions between power electronics converters in dc microgrids. Such interactions occur around the switching frequencies of the converters and are dependent on the filters connected between the converters and the dc network. The resulting resonances, under certain conditions, may coincide with some of the converters switching frequencies. In such a situation there is an expressive amplification of voltage or current, polluting the voltage along the feeder, resulting in large circulation of current at high frequency. This is an issue that can affect loads and converters connected to the microgrid and that is difficult to identify, since it occurs in frequencies beyond the frequency range usually identifies by the power quality analyzers. Simulation and experimental results are shown, based on typical converter values used in low voltage dc microgrids.