SYS2087 Explanation One of the following errors occurred: 1. The port is not installed. 2. The port is malfunctioning. 3. A DEVICE= statement for a COMxx device driver is not included in the CONFIG.SYS file. Action 1. Install the port. 2. Repair the port. 3. Put a DEVICE=COMxx statement in the CONFIG.SYS file. Then restart the system.