Raspberry Pi Pico CircuitPython COM port conflict

[bernard01]

CircuitPython version and board name

Adafruit CircuitPython 10.0.0-alpha.4 on 2025-05-05; Raspberry Pi Pico with rp2040
Board ID:raspberry_pi_pico
UID:E6635C08CB228427

Code/REPL

print("Hello)

Behavior

The serial connection to COM7: is dropped.

Description

CIRCUITPY drive is visible.
Console serial connection on COM7: is immediately dropped because COM7: is used by "Standard Serial over Bluetooth Link"
%BOARD_80F4% CircuitPython (80F4:00) (COM7)

I have another board (Waveshare RP2040-Zero) where, with the same software version, the port number is COM14.

I should say that I have Windows 7. Otherwise it seems to work fine.

Additional information

[bernard01]

I disabled the conflicting Bluetooth link (COM7) which solves the problem because I do not use that port.

[tannewt]

I have no idea how Windows 7 allocates COM numbers. I doubt we have any influence over it.

[ladyada]

this has nothing to do with us, you can manually set the COM port if desired here
https://learn.microsoft.com/en-us/answers/questions/452998/how-to-assign-static-com-port-number-to-a-device
probably a good idea to update to win 10 sometime soon
https://learn.microsoft.com/en-us/troubleshoot/windows-client/windows-7-eos-faq/windows-7-end-support-faq-general

[bernard01]

I have upgraded Windows. It was overdue. All good now.