To change the #MTU on #Windows #Server 2016, the first thing you need to do is open an Administrative command prompt. Right-Click on the start button and select “Command Prompt (Admin).” Next, you need to determine the IDX # of your #Ethernet #Adapter. You can do so using the #netsh command.
https://ibmimedia.com/explore/change-mtu-size-windows-server-2016