Microsoft KB Archive/161047

= Compaq Insight Manager may Cause TN3270 Event ID 903 =

Article ID: 161047

Article Last Modified on 5/13/2005

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APPLIES TO


 * Microsoft SNA Server 2.0
 * Microsoft SNA Server 2.1
 * Microsoft SNA Server 2.11 Service Pack 1
 * Microsoft SNA Server 2.11 Service Pack 2
 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 3.0 Service Pack 2
 * Microsoft SNA Server 3.0 Service Pack 3
 * Microsoft SNA Server 3.0 Service Pack 4
 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 4.0 Service Pack 1
 * Microsoft SNA Server 4.0 Service Pack 2
 * Microsoft SNA Server 4.0 Service Pack 3

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This article was previously published under Q161047



SYMPTOMS
The Windows NT Event Viewer Application log of a Windows NT Server running the TN3270 service may show repeated Event ID 903s. The event description is as follows:

Windows API ReadFileEx failed with error code 233L (No process is on the

other end of the pipe.) in function TCPRecv.

EXPLANATION

An unexpected error was encountered on an Windows API call.

ACTION

Record message and contact technical support.

The TNServer traces will show a TN session initiated, but the response, DO TERM TYPE, finds nothing to receive the message.



CAUSE
This can be caused by Compaq Insight Manager's use of the standard TCP/IP (Telnet) port 23.



RESOLUTION
The TN3270 service can be configured to use a different port by editing the \SYSTEM32\DRIVERS\ETC\SERVICES. For example, to configure the TN3270 service to use Port 24, add the following line and restart the TN3270 service:   telnet             23/tcp tn3270          24/tcp   #  TN3270 Service NOTE: This also requires the TN clients to be configured to use this same port.

Keywords: KB161047

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