The TcpDelAckTicks Registry Value Has No Effects on Ack Timeouts

Symptoms

When you set a value for the TcpDelAckTicks registry key to a valid value, the delayed acknowledgement timer does not change from the default setting of 200ms.

Resolution

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
The English-language version of this fix should have the following file attributes or later:

Date Time Version Size File name
--------------------------------------------------------
19-NOV-2001 15:42 5.0.2195.4667 118,896 Afd.sys
17-JAN-2002 8:18 5.0.2195.3952 106,256 Msafd.dll
17-JAN-2002 8:17 5.0.2195.4852 312,784 Tcpip.sys
30-JUL-2001 19:15 5.0.2195.3988 16,240 Tdi.sys
17-JAN-2002 8:18 5.0.2195.3649 17,680 Wshtcpip.dll

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
This problem was first corrected in Windows 2000 Service Pack 3.

More Information

For more information about this problem, view the TcpDelAckTicks section in the "Microsoft Windows 2000 TCP/IP Implementation Details" white paper that is located on the following Microsoft Web site: For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product
For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:
296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot
For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:
249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes
Properties

Article ID: 311833 - Last Review: Jun 19, 2014 - Revision: 1

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