Hi All,
Many thanks for all your suggestions and help. I managed to manually set the DNS to 8.8.8.8, re-booted and updated. Then I set the DNS to Auto and re-booted. All was fine until the same issue came back and I had to do the same process again. Seems like this keeps coming back but hopefully the fix will eventually come from Microsoft.
My parents will have no hope of doing this and even I am not really techy and its been a battle. This is far from acceptable Microsoft and there will be a huge number of non techy people out there really stressing (anti-virus out of date) and worried.
Thanks again for all the suggestions so far, hope the permanent fix comes soon,
Tim