Why does emPass Central Server heartbeat.html show old Agents (no longer present)2019-01-30 09:39:11
The emPass Central Server data.db is a database of the known Agents per the last contact from each agent . So, the timing of decommissioning an Agent and the removal from the Agents.txt could leave an Agent name orphaned in data.db. (This will be fixed in a future release.)
In the mean time, you can delete delete data.db (in the root install directory of the CS).
When you refresh heartbeat.html, you should see only the active Agents (sending a heartbeat).