Run WSUS Agent Diag Tool on WSUS Server

I am not getting Windows Updates on my actual WSUS Server.  I downloaded the Diag Tool.  Under the WSUS Server Connectivity section of the output, I am getting errors under "content" and under "iuident.cab".  Under content, the error message is "The remote server returned an error: (403) Forbidden."  Under iuident.cab, the error message is "The remote server returned an error: (404) Not Found".  Any ideas on how to resolve this?