STM32 Thing Plus lost port after UPLOAD "Exemple Blinky"

I had the same problem

Windows 11

Step1 = Without downloading BLINKY to the board, plug in the board, I could see COM3

Step2 = Follow the tutorial, download BLINKY to the board

Step3 = Recycle power via USB, the BLINKY ran no problem

Step4 = Plug in the board, but cannot see COM3 anymore

Can support help me / us?