Disappearing port

As introduction to the XIAO, I am trying to follow the simple blink code on a Window 10 PC -
https://desertbot.io/blog/seeeduino-xiao-blink-windows

But having this problem and could not find a solution -
https://forum.seeedstudio.com/t/xiao-looses-its-ports/257684

Each time I attempt to upload the code the auto-detected port disappears and a window appears showing
INDEX
INFO_UF2

I’m having the same issue using PlatformIO on VS Code. I don’t have any issues with other boards.
Hope this forum can provide a solution.

The problem is the Boot Loader for the XIAO, it has issues. Try a new part and see if the problem goes away. If it does, reload the Boot Loader.