Inserting serial port doesn't work

Hello! while trying to import data from a port i keep getting acces denied in the following line
12 Jan 15:15:43 - [error] serial port COM4 error: Error: Opening COM4: Access denied
Does anyone know how to read the COM port in a way it doesnt get denied

is something else (another application) already using it ? only one app can talk to it at one time. Does your user have access (is it part of the dialout group (if a linux user)) - etc.

Thank you, this solved it!

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