I attempted to do as requested to fix the MTU error incurred after the forced update.
After contacting microsoft & going through the generic solution fix, they advised that I had to contact my IP TELSTRA.
For a convenient $99Au fee they advised they are able to open
PORT 3074 UDP/TCP
PORT 53 UDP/TCP
PORT 80 TCP
MTU minimum 1364
After jumping into remote access we still are attempting to resolve the issue. Microsoft aren't assisting any further advising that it is the Internet provider.
Which is a lie as all other services here are working fine.