During recent reporting (and with certain reports) in Symantec Endpoint Protection Manager (12.1.6608.6300) I have encountered this rather annoying pre-set limitation:
The rows in this report have been limited to the maximum specified in your preferences.
To increase the reported limit of certain items we will need to go the Home dashboard (1) and select Preferences (2)
In the pop-up window select the Logs and Reports (1) tab and in the Maximum number of rows in report table (2) and enter a higher value than the default 200: