ProTip for ePO: Communication issue when Agent Handler is disabled before ePO upgrade

Version 1

    Some ePolicy Orchestrator (ePO) users may experience a communication issue when an Agent Handler is disabled before an upgrade to the ePO server. Disabling a remote Agent Handler removes it from the SiteList.xml. If Agents receive the updated SiteList.xml they will no longer attempt to communicate with the disabled handler. For more information regarding solutions for this issue, see KB85709.