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Microsoft KB Archive/103316

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Knowledge Base


MSDLC and Attachmate Extra Issue Errors, Hang Windows

Article ID: 103316

Article Last Modified on 9/30/2003



APPLIES TO

  • Microsoft LAN Manager 2.2 Standard Edition



This article was previously published under Q103316

SYMPTOMS

Repeatedly starting and stopping a mainframe terminal session from within Attachmate Extra for Windows on a bridged token ring network can cause errors in Extra (510) and eventually will hang Windows.

CAUSE

During this sort of activity, the AC field on the token ring packets can sometimes be set to an unexpected value of 90 hex. This is a reserved value that MSDLC is not designed to handle.

RESOLUTION

Microsoft has provided a fix in Patch 1 for LAN Manager 2.2 which simply masks out the unexpected AC bit.


Additional query words: 2.20 2.2

Keywords: KB103316