If you are using vCenter Server 2.5 Update 2 or later, and vCenter Server and vCenter Update Manager are installed on different servers, you may experience these symptoms:
[2009-02-20 13:27:03.663 'Ufa' 5232 info] Plugin initialized
[2009-02-20 13:27:03.663 'ProxySvc' 5232 info] Proxy service created: http port (80), https port (443)
[2009-02-20 13:27:03.678 'ProxySvc' 5232 error] Failed to create http proxy: Resource is already in use: Listen socket: :80
[2009-02-20 13:27:03.678 'ProxySvc' 5232 info] Proxy service stopped
[2009-02-20 13:27:03.678 'ProxySvc' 5232 info] Proxy service destroyed
[2009-02-20 13:27:03.678 'Ufa' 5232 info] Plugin started
Note: The default path to these logs is C:\Documents and Settings\All Users\Application Data\VMware\VMware Update Manager\Logs\vum-webServer-*.log. Check the most recent version of the log.
<proxySvc>
.
.
<ports>
<http>9080</http>
<https>9043</https>
</ports>
.
.
</proxySvc>
Note: Set the port numbers for <http> and <https> to the values configured in the registry. In this example, port 9080 is used for <http> and port 9043 is used for <https>.
Save the file and exit.
Restart the VMware Update Manager Service for the change to take effect.