The message occurs when the product selected for uninstall, is no longer present on the computer.
ePO looks in the following Windows registry key for the appropriate application plug-in key:
64-bit
HKLM/Software/Wow6432Node/Network Associates/ePolicy Orchestrator/Application Plugins
32-bit
HKLM/Software/Network Associates/ePolicy Orchestrator/Application Plugins
When the key is present, it contains the uninstall command line to be executed. With the key Hive not present, the product is no longer installed.