Hello everybody! I've got a development board NUCLEO-H743ZI2. I try to study USB using STM32CUBEMX. I always get an error 43 in my windows PC after reconnecting. Can anybody say to me what I've do wrong?

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 I configured clock configuration and USB CDC with default settings without using VBUS. In main() i try to sent a message to PC using function CDC_Transmit_FS which was generated CUBEMX. First connection to PC is successful and i got my messages. After that i reconnect my NUCLEO and get error 43 in windows. Could anybody help me please with this problem?