Configure TCPIP Max Transfer Unit (MTU) size

The default Max Transfer Unit (MTU) size for ethernet is 1500 bytes, if using a network with a different MTU size, then one should make sure to configure MTU in Windows to avoid packet fragmentation or connection loss.

Open an Elevated Command Prompt and run this command to view current MTU size of the available IPv4 sub-interfaces (Can also be done with IPv6):

netsh interface ipv4 show interfaces

To change the MTU size of sub-interface no. 1 (See “Idx” from above command):

netsh interface ipv4 set subinterface interface=1 mtu=1500 store=persistent

Related Registry settings to Configure MTU size.