A Web site sends data very slowly or drops the data completely when you use Windows Vista Enterprise

A Web site sends data very slowly or drops the data completely when you use Windows Vista Enterprise
Article ID : 929868
Last Review : October 16, 2007
Revision : 1.1

SYMPTOMS

When you use Windows Vista Enterprise to try to access a Web site, the Web site sends data very slowly or drops the data completely.

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CAUSE

By default, Windows Vista Enterprise fully supports RFC 1323 and supports a Windows Scaling factor of 8. This issue occurs when a Web site does not fully support RFC 1323 or when a Web site does not support the default scaling factor.

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WORKAROUND

To work around this issue, change the Windows Scaling factor to 2. To change the Windows Scaling factor to 2, follow these steps:
1. Click Start, click All Programs, and then click Accessories.
2. Right-click Command Prompt, and then click Run as administrator.
3. At the prompt in the Administrator: Command Prompt window, type the following command, and then press ENTER:
netsh interface tcp set global autotuninglevel=highlyrestricted

.

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MORE INFORMATION

For more information about RFC standards and Windows Scaling, visit the following Microsoft Developer Network (MSDN) Web sites:

Windows TCP implementation features:

http://msdn2.microsoft.com/en-us/library/ms819768.aspx (http://msdn2.microsoft.com/en-us/library/ms819768.aspx)

Win32 and COM Development:

http://msdn2.microsoft.com/en-us/library/ms741621.aspx (http://msdn2.microsoft.com/en-us/library/ms741621.aspx)

For more information about RFC 1323, visit the following Internet Engineering Task Force Web site:

http://go.microsoft.com/fwlink/?linkid=6746 (http://go.microsoft.com/fwlink/?linkid=6746)

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APPLIES TO
• Windows Vista Enterprise
• Windows Vista Business
• Windows Vista Home Basic
• Windows Vista Home Premium
• Windows Vista Starter
• Windows Vista Ultimate

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Keywords: 
kbtshoot kbprb kbexpertiseinter KB929868

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