http://blogs.technet.com/b/sus/archive/2008/10/15/wsus-console-fails-to-connect-with-the-wsus-administration-console-was-unable-to-connect-to-the-wsus-server-via-the-remote-api-error.aspxHere's an interesting one that was recently written up by David Kirchmer, one of our Senior Support Engineers from Charlotte, North Carolina.&#160; If you're getting errors such as &quot;The WSUS administration console was unable to connect to the WSUSen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/sus/archive/2008/10/15/wsus-console-fails-to-connect-with-the-wsus-administration-console-was-unable-to-connect-to-the-wsus-server-via-the-remote-api-error.aspx#3560534Sat, 23 Mar 2013 06:35:43 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3560534Steve<p>Yes, but WHAT ports need to be opened?</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3560534" width="1" height="1">http://blogs.technet.com/b/sus/archive/2008/10/15/wsus-console-fails-to-connect-with-the-wsus-administration-console-was-unable-to-connect-to-the-wsus-server-via-the-remote-api-error.aspx#3209559Thu, 05 Mar 2009 18:19:16 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3209559dnsgreene<p>I have a server that I installed WSUS sp1 on September 21st 2008 and I just started getting this error message on March 4th 2009. No changes have been made to the firewall. Do you have any other suggestions? </p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3209559" width="1" height="1">