New registry entry for managing the TCP Acknowledgment (ACK) conduct in Windows XP and in Windows Server 2003SUMMARYMORE Info As specified in RFC 1122, TCP employs delayed acknowledgments to reduce the amount of packets which might be sent within the media. Rather than sending an acknowledgment for each TCP segment obtained, TCP in Windows 2000 and later on requires a common method to employing delayed acknowledgments. As data is obtained by TCP on a distinct connection, it sends an acknowledgment back again only if a single with the following circumstances is accurate: No acknowledgment was sent for your earlier segment acquired.A section is obtained,
Windows 7 Pro Key, but no other segment arrives inside of 200 milliseconds for that connection. Generally, an acknowledgment is sent for every other TCP section which is received on a connection unless the delayed ACK timer (200 milliseconds) expires. You can adjust the delayed ACK timer by modifying the subsequent registry entry.
Important Before you decide to edit this registry entry,
Cheap Office 2010, you have to 1st set up the hotfix that is explained within the subsequent report:
Important This section, method, or process includes methods that inform you the way to modify the registry. Even so, serious difficulties might take place should you modify the registry incorrectly. For that reason,
Genuine Office 2007, make certain that you comply with these measures carefully. For added protection, back up the registry before you modify it. Then, it is possible to restore the registry if a problem occurs. For a lot more information about how you can back again up and restore the registry,
Microsoft Office Standard 2010, click on the subsequent post quantity to view the report in the Microsoft Understanding Base: Subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Tcpip\Parameters\Interfaces\<Interface GUID>
Entry: TcpAckFrequency
Value Type: REG_DWORD,
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Valid Range: 0-255
Default: 2
Description: Specifies the quantity of ACKs that will be outstanding ahead of the delayed ACK timer is ignored. Microsoft does not recommend changing the default value without careful study of the environment. For much more details, visit the subsequent Microsoft Web page: ( In the event you set the value to 1, every single packet is acknowledged immediately because there is only a single outstanding TCP ACK as a section is just received. The value of 0 (zero) is not valid and is treated as the default, 2. The only time the ACK quantity is 0 is when a segment is not acquired and the host is not going to acknowledge the information.