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Microsoft KB Archive/171255

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Knowledge Base

WNAP /User: Parameter and /Pwd: Parameter Do not Succeed In SNA Server 3.0

Article ID: 171255

Article Last Modified on 6/24/2004


  • Microsoft SNA Server 4.0
  • Microsoft SNA Server 3.0 Service Pack 4

This article was previously published under Q171255


An SNA Server client running the SNA Server 3.0 (or 3.0 SP1) Windows 3.x client cannot establish a sponsor connection to an SNA Server if Wnap.exe is autostarted using the /User: and /Pwd: parameters to automate the client logon.

The following is an example of a WNAP command that uses these parameters:

wnap /user:<username> /pwd:<password>

where username is a valid Windows NT user name and password is the password for this user name.

When the sponsor connection fails, you receive the following error message:

SNA Server Warning: 629
No SNA Server Configuration Broadcast received.
A Server must be available before you can use 3270 or APPC.

The problem does not occur if the parameters are all uppercase.

The /User: and /Pwd: parameters are documented in Appendix A of the SNA Server version 3.0 "Planning Guide."


The Wnap.exe program that is included with the SNA Server 3.0 Windows 3.x client does not correctly parse the /User: and /Pwd: parameters if they are entered in mixed case or lowercase.


To work around this problem, when you autostart WNAP, specify the two parameters in uppercase as shown here:

wnap /USER:username /PWD:password

NOTE: The arguments that you enter for USER and PWD do not need to be uppercase.

The Wnap.exe program has been updated to correctly parse these parameters in all cases.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack

Keywords: kbbug kbfix kbnetwork KB171255