Window Auto-Tuning is a feature introduced in Windows Vista and still in use on Windows 10. Window Auto-Tuning was designed to automatically improve the performance of programs that receive TCP data over a network.

Window Auto-Tuning should be enabled and left alone unless you have an older router, WI-Fi, network card, or firewall that does not support this feature. Let's take a look at how to check for or even enable and disable Windows Auto-Tuning.

Video tutorial:



To find your current Auto-Tuning status, open a Command-Prompt and type in:

netsh interface tcp show global

Look for Receive Window Auto-Tuning Level. You should see normal.



Here are the commands to enable or disable Auto-Tuning:

Disable: netsh int tcp set global autotuninglevel=disabled
Enable: netsh int tcp set global autotuninglevel=normal

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