High bitrates over weak local networks or remote internet connections cause timeouts. Lower the bitrate of your cameras in the NVR encoding menu.

How to Fix "Failed to Start Playback" NetSDK Error in SmartPSS

Whether your system connects locally via a or remotely via P2P/Serial Number . NETSDK error on playback.

Press Ctrl + Shift + Esc (or Ctrl + Alt + Delete ) to initialize the .