Applixure calculates the number of devices in a given environment based on incoming data from Applixure agents installed on individual computers. You can check the number of devices being currently monitored from the Devices tab.
If a device stops reporting data to Applixure, the device is automatically removed from Applixure's list of active devices after 45 days since the last data update. When the device is removed, its data will no longer affect Applixure Scores.
A typical reason for a device to stop sending data to Applixure is that the device is taken out of use as part of its normal lifecycle.
You can also remove devices from Applixure manually.