Windows: Set MTU

To view the current MTU, open command prompt and enter:

netsh int ipv4 show int

The output should be similar to the below:

Idx     Met         MTU          State                Name
---  ----------  ----------  ------------  ---------------------------
 11          10        1300  connected     Local Area Connection

To change the MTU, enter:

netsh interface ipv4 set subinterface "11" mtu=1300 store=persistent

Where the subinterface value matches the entry in the Idx column.