Can't Open Multiple TN3270 Sessions

The information in this article applies to:

• Microsoft SNA Server, version 3.0 Service Pack 1 (SP1)

SYMPTOMS

After you upgrade from SNA Server 3.0 to 3.0 Service Pack 1 (SP1), TN3270 users who are assigned multiple LUs to their IP address (to support multiple sessions) are only able to open a single session. This problem affects TN3270-only clients (not TN3270E).

When attempting to open a second session from the same TN3270 client, the TN3270 emulator receives the following error:

   PROG 505

   TN3270E Service Error 511 Telnet negotiation failure: client did not
   send a valid configured TN3270 terminal type.

CAUSE

This problem was introduced in SNA Server 3.0 Service Pack 1, by the addition of TN3270 server support for multiple ports.

STATUS

Microsoft has confirmed this to be a problem in SNA Server version 3.0 Service Pack 1. This problem was corrected in the latest SNA Server version 3.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K

Keywords          : snatn3270 kbfix3.00.sp2 kbnetwork
Version           : 3.0
Platform          : winnt
Issue type        : kbbug
Solution Type     : kbfix