WSUS - Not able to Complete the install of WSUS

Symptom
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WSUS post installation task failed.

Cause
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The port 8530 was listening to the IP 127.0.0.1

Error:

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2018-03-27 11:38:31.478 UTC Error       WsusService.9        HmtWebServices.CheckDssAuthWebService      DssAuth WebService WebException:System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it [::1]:8530

Resolution

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Deleted this IP mapping using the following command.

netsh http del iplisten ipaddress=127.0.0.1