Microsoft KB Archive/153411

= Default APPC Are Not Resolved Correctly for OS/2 Clients =

Article ID: 153411

Article Last Modified on 11/19/2003

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APPLIES TO


 * Microsoft SNA Server 2.1, when used with:
 * Microsoft Windows NT 4.0
 * Microsoft SNA Server 3.0, when used with:
 * Microsoft Windows NT 4.0

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This article was previously published under Q153411





SYMPTOMS
APPC applications using the Microsoft SNA OS/2 client that make a call to a default local LU or remote LU may fail.



CAUSE
The TP_STARTED verb is passing a local LU alias of all zeroes. Therefore the APPC library goes into default LU processing, which is to query the user record from the SNA server. For OS/2, this is done by calling the sepdcrecfunction. The wrong information is being returned on this call, which is causing the APPC library to believe that the LU alias for this user is a one byte value of 0x01. When the APPC library tries to use this as the local LU alias, the SNA Server rejects it.

The OS/2 APPC library's support for extracting a local LU for a particular user was broken when the OS/2 DMODs sepdcrec processing was changed to use RPC calls to query the server.



STATUS
Microsoft has confirmed this to be a problem in Microsoft SNA Server versions 2.1 and 2.11. This problem was corrected in the latest Microsoft SNA Server 2.11 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: OS/2 APPC TPs

Keywords: kbbug kbfix kbenv KB153411

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