Microsoft KB Archive/812784

= How to Modify the NBT Negative Session Setup Response Timer for SMB Sessions =

PSS ID Number: 812784

Article Last Modified on 10/10/2003

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The information in this article applies to:


 * Microsoft Windows Server 2003, Standard Edition
 * Microsoft Windows Server 2003, Enterprise Edition
 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Datacenter Edition
 * Microsoft Windows Server 2003, 64-Bit Datacenter Edition
 * Microsoft Windows Server 2003, 64-Bit Enterprise Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Media Center Edition
 * Microsoft Windows XP Tablet PC Edition
 * Microsoft Windows XP 64-Bit Edition
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional
 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Datacenter Server
 * Microsoft Windows NT Server 4.0
 * Microsoft Windows NT Server 4.0 Terminal Server Edition
 * Microsoft Windows NT Server, Enterprise Edition 4.0
 * Microsoft Windows Small Business Server 2003, Premium Edition
 * Microsoft Windows Small Business Server 2003, Standard Edition

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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SUMMARY
This article describes how to modify the NetBIOS over TCP/IP (NBT) negative session setup response timer for Server Message Block (SMB) sessions.



MORE INFORMATION
The general network communication in a Windows network uses the SMB protocol. During a typical SMB protocol connection setup between two computers, the client sends a special network frame known as a session setup request to the server. In certain cases, the server rejects the session setup request from the client and returns a negative session setup response frame. In Windows NT 4.0, you can modify the negative session setup timer value.

Note A negative session setup response from the server indicates resource shortages or other problems on that particular server. Before you modify the negative session setup response timer on the client side, check the server and rule out problems on the server side.

Windows Server 2003, Windows XP, and Windows 2000
Windows Server 2003, Windows XP, and Windows 2000 use a hard-coded value of 10 seconds for the negative session setup timer. You cannot modify this value by modifying the registry.

Windows NT 4.0
By default, Windows NT 4.0 uses a value of 10 seconds for the negative session setup timer. To modify the timer value in Windows NT 4.0, follow these steps.

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.  Start Registry Editor. Locate and then click the following registry subkey:

 

 Add the following registry value:

Value:

Type:

Data:



Keywords: kbhowto KB812784

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