Wsus last status report not updating sccm
The following procedure describes how to configure a corporate firewall which is positioned between WSUS and the Internet.
Remember, though, unless KB3095113 is applied to the WSUS server, the upgrade will only display – not be available to deploy.
Read about that here: Windows 10 1511 Headed to WSUS in a “Couple Weeks,” KB3095113 Needed.
The timing of the release to WSUS makes a lot sense, considering Microsoft also announced the general availability of the next version of System Center Configuration Manager today.
Configuration Manager relies on WSUS to pull down updates and patches from Microsoft so they are available for administrators to deliver to managed endpoints.
once this is done the installation / upgrade completes as normal after telling windows update on the client to retry.