Article ID: 2785648 - View products that this article applies to.
Consider the following scenario:
Having multiple print queues installed to the same port is not a supported scenario. In order for BIDI communication to work, the print queue can only enumerate one print driver.
To ensure Bidi communication works properly, do not install multiple print queues to the same port.
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.