The serial port debugging assistant reported that this serial port or serial port is not occupied. - Quotes Website

The serial port debugging assistant reported that this serial port or serial port is not occupied.

1. Check whether the COM data cable is firmly connected.

2. If mobile phone software and Bluetooth software are installed on your computer, please remove them and restart your computer.

3. If the above operation fails, please delete the registry key:

HKEY _ local _ machine \ system \ currentcontrolset \ control \ com name arbiter

After that, restart the computer.

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