You may experience these symptoms:
Attempting to enable the VMware vCenter Update Manager plugin fails
You receive the following error:
There was an error connecting to vmware vcenter update manager – IPADDRESSOFVC:8084
Vmacore::Exception: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
The request failed because of a connection failure.
Enabling the VMware vCenter can fail if you are using a remote SQL database with Windows authentication and the Update Manager service is set to log on as the local system account.
Change the service to login as the same Windows NT account that has been given dbo permissions to the SQL database.
Make sure the vci-integrity.xml file, located at C:\Program Files\VMware\Infrastructure\Update Manager, has the correct vCenter IP address. If the IP address is incorrect, update it and restart the Update Manager service.