Microsoft KB Archive/126560

= Cannot Create NetBIOS Session Over TCP/IP =

Article ID: 126560

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Server 3.5

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This article was previously published under Q126560



SYMPTOMS
When you run NET VIEW or NET USE, you may receive the following error message:

System error 1225 has occurred. The remote system refused the network connection.

A trace of network activity shows repeated pairs of the following messages:

workstation->server: SYN

server->workstation: ACK, RST

The following STOP message may also appear:

STOP 0xc000000A

This problem occurs on servers with very heavy NetBIOS traffic over TCP/IP.



CAUSE
When netbt receives a zero length message, it fails to update the number of bytes left in the transport. As a result, when the connection is later disconnected, it never receives disconnect indication from the transport, leaving the connection unusable. After all connections are exhausted, new connections are not accepted.



STATUS
NETBT.SYS has been modified so that it correctly handles 0 length messages.

Microsoft has confirmed this to be a problem in Windows NT version 3.5. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 3.5. 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: 3.50 prodnt trap blue screen

Keywords: KB126560

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