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SMB: No registry setting for tuning the TCP window size in TCP/IP should exist

Published: November 17, 2010

Updated: November 17, 2010

Applies To: Windows Server 2008 R2

This topic is intended to address a specific issue identified by a Best Practices Analyzer scan. You should apply the information in this topic only to computers that have had the File Services Best Practices Analyzer run against them and are experiencing the issue addressed by this topic. For more information about best practices and scans, see Best Practices Analyzer.

 

Operating System

Windows Server 2008 R2

Product/Feature

File Services

Severity

Warning

Category

Performance

The registry setting for tuning the TCP window size in TCP/IP is enabled on this server.

This registry setting is ignored by this version of Windows and is consuming a small amount of extra space in the registry.

Use Registry Editor to delete the registry setting.

Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure.

  1. Click Start, click Run, type regedit, and click OK.

  2. Locate and then click to select the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters.

  3. Right-click the setting TCPWindowSize and click Delete.

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