Unable to Open Port

NI-Serial was unable to open this port. Possible causes for this problem are listed below:

The port is already open

You must close all open ports to run this test successfully. Close all serial applications and click Retest to rerun the NI-Serial Troubleshooter.

The port is disabled in the Device Manager

All NI Serial ports must be enabled to run this test successfully. Refer to the Device Manager to verify that all ports are enabled.