This policy setting allows you to manage whether the Windows Remote Management (WinRM) service will not accept Kerberos credentials ...

This policy setting allows you to manage whether the Windows Remote Management (WinRM) service will not accept Kerberos credentials over the network.

If you enable this policy setting, the WinRM service will not accept Kerberos credentials over the network.

If you disable or do not configure this policy setting, then the WinRM service will accept Kerberos authentication from a remote client.