Disappearing port

As introduction to the XIAO, I am trying to follow the simple blink code on a Window 10 PC -

But having this problem and could not find a solution -

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

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.