Applies to

Details

Causes

Customers have reported the following scenarios as possible causes for this event:

  -  TCP/IP Offload is enabled for a network adapter
  -  TCP/IP v6 is enabled and their ISP does not yet support TCP/IP v6.
  -  The spanning tree “portfast" setting is not enabled on your servers switch ports.

User Action

Method one: Disable RSS, Autotuning, and Taskoffload

1.   Run the following command in an elevated command prompt in Windows 7:

 
netsh interface tcp set global rss=disabled

netsh interface tcp set global autotuninglevel=disabled

netsh int ip set global taskoffload=disabled

2.  Disable the Scalable Networking Pack (SNP) in Windows 7 by changing the registry settings as follows:

Perform a full-system backup before you disable the SNP.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]

EnableTCPChimney=dword:00000000
EnableTCPA=dword:00000000
EnableRSS=dword:00000000

 
If the registry keys do not exist, create them, and then assign the previous values.

Method two : Disable TCP/IP v6

To disable TCP/IP v6

1.  Click Start, click Control Panel, click Network and Internet, and then click
View network status and tasks.

2.  In the left pane, click Manage Network Connections.

3.  Right-click Local Area Connection, and then click Properties.

4.  In the pop-up box, clear the Internet Protocol Version 6 (TCP/IPv6) check box.

5.  Click OK, and then restart your computer.

 To enable TCP/IP v6

1.  Follow steps 1 through 3 in the previous procedure.

2.  In the pop-up box, select the Internet Protocol Version 6 (TCP/IPv6) check box.

3.  Click OK, and then restart your computer.

Method three: Enable the spanning tree portfast setting in your router 

This action varies depending on your infrastructure router. Consult your manufacturer for further details.