I am getting and error for my Update server. Testing my client comms to server using these links and no issues - firewall seems fine.
http://SERVER/SMS_MP/.sms_aut?mplist
http://SERVER/SMS_MP/.sms_aut?mpcert
http://SERVER:8530/ClientWebService/WusServerVersion.xml

Event Logs:
WSUS Control Manager failed to monitor WSUS Server "SERVER".
Possible cause: WSUS Server version 3.0 SP2 or above is not installed or cannot be contacted.
Solution: Verify that the WSUS Server version 3.0 SP2 or greater is installed. Verify that the IIS ports configured in the site are same as those configured on the WSUS IIS website.
WSUS Control Manager failed to configure proxy settings on WSUS Server "server".
Possible cause: WSUS Server version 3.0 SP2 or above is not installed or cannot be contacted.
Solution: Verify that the WSUS Server version 3.0 SP2 or greater is installed. Verify that the IIS ports configured in the site are same as those configured on the WSUS IIS website.You can receive failure because proxy is set but proxy name is not specified or proxy server port is invalid.
WCM LOG:
Remote configuration failed on WSUS Server.

http://SERVER/SMS_MP/.sms_aut?mplist
http://SERVER/SMS_MP/.sms_aut?mpcert
http://SERVER:8530/ClientWebService/WusServerVersion.xml
Event Logs:
WSUS Control Manager failed to monitor WSUS Server "SERVER".
Possible cause: WSUS Server version 3.0 SP2 or above is not installed or cannot be contacted.
Solution: Verify that the WSUS Server version 3.0 SP2 or greater is installed. Verify that the IIS ports configured in the site are same as those configured on the WSUS IIS website.
WSUS Control Manager failed to configure proxy settings on WSUS Server "server".
Possible cause: WSUS Server version 3.0 SP2 or above is not installed or cannot be contacted.
Solution: Verify that the WSUS Server version 3.0 SP2 or greater is installed. Verify that the IIS ports configured in the site are same as those configured on the WSUS IIS website.You can receive failure because proxy is set but proxy name is not specified or proxy server port is invalid.
WCM LOG:
Remote configuration failed on WSUS Server.

