generally indicates a communication failure between the SmartPSS software and the Dahua (or rebranded) recorder's SDK
: Open your Task Manager while SmartPSS is running, find the SmartPSS process, right-click it, and select End Task . Then, restart the application as an Administrator. find the SmartPSS process
Ensure that the NVR, all connected cameras, and your viewing PC are set to the same time and timezone. and select End Task . Then