Prior to upgrade the Settings -> Global -> Management Port was changed from 443 to a custom port number. After upgrading to SEDR 4.5 the web GUI (Graphical User Interface) becomes available on both the default port (443) as well as the custom configured port.
Release : 4.5.0
Broadcom Engineering resolved this issue in version 4.6.0. Please update to the latest build to receive this fix. If an upgrade to SEDR 4.6.0 is not possible, then use the workaround steps listed below.