Microsoft KB Archive/317437

= NetBIOS Listen May Return a Damaged NCB Structure =

Article ID: 317437

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q317437



SYMPTOMS
The _NCB structure that is returned when a NetBIOS Listen call completes may have a changed server name offset.

NCB Structure Before the Listen Call
0:000> dt NCB 000006fb'ff694e30

+0x000 ncb_command : 0x11 ''

+0x001 ncb_retcode : 0 ''

+0x002 ncb_lsn : 0 ''

+0x003 ncb_num : 0 ''

+0x008 ncb_buffer : (null)

+0x010 ncb_length : 0

+0x012 ncb_callname : [16] &quot;client1 &quot;

+0x022 ncb_name : [16] &quot;TEST-SERVER-1 &quot;

+0x032 ncb_rto : 0 ''

+0x033 ncb_sto : 0 ''

+0x038 ncb_post : (null)

+0x040 ncb_lana_num : 0 ''

+0x041 ncb_cmd_cplt : 0 ''

+0x042 ncb_reserve : [18] &quot;&quot;

+0x058 ncb_event : (null)

NCB Structure After the Listen Call
0:000> dt NCB 000006fb'ff694e30

+0x000 ncb_command : 0x11 ''

+0x001 ncb_retcode : 0 ''

+0x002 ncb_lsn : 0x1 ''

+0x003 ncb_num : 0 ''

+0x008 ncb_buffer : 0x746e6569'6c630000 &quot;&quot;

+0x010 ncb_length : 0x2031

+0x012 ncb_callname : [16] &quot; TEST-SER&quot;

+0x022 ncb_name : [16] &quot;VER-1 &quot;

+0x032 ncb_rto : 0 ''

+0x033 ncb_sto : 0 ''

+0x038 ncb_post : (null)

+0x040 ncb_lana_num : 0 ''

+0x041 ncb_cmd_cplt : 0 ''

+0x042 ncb_reserve : [18] &quot;&quot;

+0x058 ncb_event : (null)



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to Obtain the Latest Windows XP Service Pack

The English version of this fix should have the following file attributes or later:

  Date       Time   Version      Size     File name ---  11-Feb-02  09:58  5.1.2600.28  135,296  Netbios.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows XP Service Pack 1.

Keywords: kbhotfixserver kbqfe kbbug kbenv kbfix kbnetwork kbui kbwinxpsp1fix KB317437

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