Let the default settings of Window Auto-Tuning feature be enabled. Then, the Receive Window Auto-Tuning feature adapts the receive window size of the ongoing transmission to take advantage of any unused bandwidth. To determine the optimal receive window size, the Receive Window Auto-Tuning feature measures the products that delay bandwidth and the application retrieve rates. Therefore, the operating system can configure connections by scaling the TCP receive window to maximize the network performance. The Receive Window Auto-Tuning feature lets the operating system continually monitor routing conditions such as bandwidth, network delay, and application delay. To disable Receive Window Auto-Tuning feature for HTTP traffic, give it a value of 0 or delete the created TcpAutotuning DWORD.
Type TcpAutotuning and give it a vale of 1. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp To enable the Receive Window Auto-Tuning feature for HTTP traffic, Run regedit and navigate to the following registry subkey:
You can also tweak the Windows Registry, says KB947239. To enable Windows AutoTuning, run the following command: netsh int tcp set global autotuninglevel=normal To disable Windows AutoTuning, run the following command: netsh int tcp set global autotuninglevel=disabled If you see ‘normal’ written against Receive Window Auto-Tuning Level, it means that the feature is enabled and it is working fine. To check the status of Auto-Tuning feature on your system, in an elevated command prompt windows, type the following and hit Enter: netsh interface tcp show global But if your network uses an old router or your firewall software does not support this feature, then you may experience slow data transfers or even loss of connectivity. Window Auto-Tuning feature is enabled by default in Windows 10 and makes data transfers over networks more efficient. Programs like Automatic Updates, Windows Update, Remote Desktop Connection, Windows Explorer for network file copy, etc, use WinHTTP or Windows HTTP Services. Windows 10 will dynamically adjust the receive buffer size to the throughput and latency of the link, using this feature. In today’s Internet, the range of latencies & throughput speeds is just too large to manage statically. It was introduced in Windows Vista and is present in Windows 10 too.
Window Auto-Tuning feature is said to improve the performance for programs that receive TCP data over a network.
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