Error: Incorrect function

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Error: Incorrect function


Error: Incorrect function testing CPDialup


This message is given when trying to test the modem from the Dialup Server Configuration utility (DialupConfig.exe).

This message means the test could not communicate with the modem and could be the result of one or more problems.


  • Go into the Windows Device Manager and uninstall the serial port, then reboot the system and let Windows detect and install the port.
  • The modem must be physically connected to the workstation running the test.
  • The modem may not be usable for dial-up authorizations, try a different modem and modem cable
  • Double-check the configuration settings. If the test continues to fail, try a different workstation as the CPDialup server.

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