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FAQ and known issues

Q: I want to handle (create or remove) connections programmatically.

A: You can do that via the command line.

 

Q: I cannot open a virtual serial port.

A: Invoking the “CreateFIle” function with a string like “COM%d” lets you open only the ports COM–COM9. To open other ports, use a string like “\\.\COM%d” instead. In that case, you can open COM ports with any number.

 

Q: How can I get a list of all virtual COM ports?

A: You can use the SetupAPI functions and look for all devices of the class with the GUID {487ECAF4-213D-4d17-AA07-2F91078B619D}.




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