The certificates bound to the HTTPS listener for IPv4 and IPv6 do not match. For SSTP connections, certificates should be ...

The certificates bound to the HTTPS listener for IPv4 and IPv6 do not match. For SSTP connections, certificates should be configured for 0.0.0.0:Port for IPv4, and [::]:Port for IPv6. The port is the listener port configured to be used with SSTP. The default listener port is 443.