Unable to monitor VMware vCenter and get following error in VMware agent log
2017-01-16 13:11:07.781 INFO [vm-historicTask-0] com.quest.agent.esx.task.util.VIServiceUtils - Attempting to connect to ConnectionInfo [host=vCenter_server_name, urlPath=sdk, port=9443, ssl=true], user: administrator@vsphere.local, Trust All Certificates: true
..
2017-01-16 13:11:38.154 WARN [Quartz[0]-3] com.quest.agent.esx.task.ESXAgentTask - NetFlow - Error during execution: ERROR: VI SDK invoke RetrieveServiceContent, exception:DocumentException:Error on line 31 of document http://www.w3.org/TR/html4/loose.dtd : The declaration for the entity "HTML.Version" must end with '>'. Nested exception: The declaration for the entity "HTML.Version" must end with '>'.; nested exception is:
org.dom4j.DocumentException: Error on line 31 of document http://www.w3.org/TR/html4/loose.dtd : The declaration for the entity "HTML.Version" must end with '>'. Nested exception: The declaration for the entity "HTML.Version" must end with '>'.
java.rmi.RemoteException: VI SDK invoke RetrieveServiceContent, exception:DocumentException:Error on line 31 of document http://www.w3.org/TR/html4/loose.dtd : The declaration for the entity "HTML.Version" must end with '>'. Nested exception: The declaration for the entity "HTML.Version" must end with '>'.; nested exception is:
org.dom4j.DocumentException: Error on line 31 of document http://www.w3.org/TR/html4/loose.dtd : The declaration for the entity "HTML.Version" must end with '>'. Nested exception: The declaration for the entity "HTML.Version" must end with '>'.
.....
Caused by: org.dom4j.DocumentException: Error on line 31 of document http://www.w3.org/TR/html4/loose.dtd : The declaration for the entity "HTML.Version" must end with '>'. Nested exception: The declaration for the entity "HTML.Version" must end with '>'.
at org.dom4j.io.SAXReader.read(SAXReader.java:482)
at org.dom4j.io.SAXReader.read(SAXReader.java:343)
at com.vmware.vim25.ws.XmlGenDom.fromXML(XmlGenDom.java:69)
at com.vmware.vim25.ws.WSClient.invoke(WSClient.java:136)
... 32 more