COM Port not appear in my device manager (USB CDC) STM32F446MEY

[ALips]

Hello,

I start the development on a STM32F446MEY but I meet a problem on the USB part.

I use STM32CubeMX to set my board in device mode (CDC) but when I load the program, it does not appear in my device manager while the initialization proceeds without worry.

I tried the solutions found on various forums but none worked.

Would you have a solution to my problem?

I use:

• Windows 10
• ST Link V2 (Nucleo-F401RE)
• The kit : https://www.st.com/en/evaluation-tools/steval-bcnkt01v1.html
• Atollic 9.3.0
• STM32CubeMX 5.2.1
• Firmware : STM32Cube_FW_F4_V1.24.1

Antoine