Microsoft KB Archive/150996

= Session Canceled Error Using IBM 16/4 Adapter II =

Article ID: 150996

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Server 3.51

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This article was previously published under Q150996





SYMPTOMS
When you perform certain read operations between Windows NT computer using an IBM 16/4 Adapter II network adapter and any Server Message Block (SMB) client or server, the session to the remote computer stops and a "Session canceled" error message appears. Additional attempts continue to fail with the same error. For example, this problem occurs when you copy a file larger than 40 KB from a remote computer to a Windows NT 3.51 computer on the same physical token ring network.



CAUSE
The IBM 16/4 Adapter II driver incorrectly reports the maximum receive size to the transport driver. When the redirector performs a RAW read request and the data returned is the maximum size allowed, the transport driver flags this as an error and drops the packet as "too large". This eventually causes the destination computer to disconnect after a number of retries.



RESOLUTION
To correct this problem, apply the fix mentioned below.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem was corrected in the latest Windows NT 3.51 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: prodnt 3.51 Token Ring Session Canceled IBM

Keywords: KB150996

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