TCP traffic stops after you enable both receive-side scaling and Internet Connection Sharing in Windows Vista or in Windows Server 2003 with Service Pack 1 or Service Pack 2

TCP traffic stops after you enable both receive-side scaling and Internet Connection Sharing in Windows Vista or in Windows Server 2003 with Service Pack 1 or Service Pack 2

Article ID : 927168
Last Review : February 28, 2008
Revision : 3.1

SYMPTOMS

After you enable both receive-side scaling and Internet Connection Sharing, TCP traffic stops. For example, the ping command does not work.

This problem occurs when this computer is running one of the following operating systems:

• Microsoft Windows Server 2003 with Service Pack 1 (SP1) and the Microsoft Windows Server 2003 Scalable Networking Pack installed
• Microsoft Windows Server 2003 with Service Pack 2 (SP2)
• Windows Vista

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CAUSE

This problem occurs because receive-side scaling and Internet Connection Sharing are mutually exclusive.

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RESOLUTION

To resolve this problem, disable either receive-side scaling or Internet Connection Sharing. Do not enable both receive-side scaling and Internet Connection Sharing at the same time.

To disable receive-side scaling on Microsoft Windows Server 2003, follow the steps in the Step 3: Disable Receive Side Scaling section in the following Microsoft Knowledge Base article:

936594 (/Feedback.aspx?kbNumber=936594/) You may experience network-related problems after you install Windows Server 2003 SP2 or the Scalable Networking Pack on a Windows Server 2003-based computer

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the Applies to section.

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MORE INFORMATION

To determine whether receive-side scaling is enabled in Windows Vista, type the following command at a command prompt:

netsh interface tcp show global

Output that resembles the following will appear:

    Querying active state...    TCP Global Parameters    ----------------------------------------------    Receive-Side Scaling State          : enabled    [...]

To disable receive-side scaling, type the following command at a command prompt:

netsh interface tcp set global rss=disabled

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REFERENCES

For more information about the Microsoft Windows Server 2003 Scalable Networking Pack release, click the following article number to view the article in the Microsoft Knowledge Base:

912222 (/Feedback.aspx?kbNumber=912222/) The Microsoft Windows Server 2003 Scalable Networking Pack release
927695 (/Feedback.aspx?kbNumber=927695/) You cannot host TCP connections when Receive Side Scaling is enabled in Windows Server 2003 with Service Pack 2
936594 (/Feedback.aspx?kbNumber=936594/) You may experience network-related problems after you install Windows Server 2003 SP2 or the Scalable Networking Pack

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APPLIES TO
• Windows Vista Home Basic
• Windows Vista Home Premium
• Windows Vista Business
• Windows Vista Enterprise
• Windows Vista Ultimate
• Microsoft Windows Server 2003 Service Pack 1, when used with:
    Microsoft Windows Server 2003, Standard Edition (32-bit x86)
    Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    Microsoft Windows Server 2003, Web Edition
• Microsoft Windows Server 2003 Service Pack 2

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Keywords: 
kbtshoot kbexpertiseinter kbprb KB927168

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Microsoft Knowledge Base Article

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