The error message "Failed to start playback. NETSDK returns error"
"Failed to start playback. NetSDK returns error: Smart PSS exclusive." The error message "Failed to start playback
| Action | Reason | |--------|--------| | Always exit SmartPSS via File → Exit (not just [X] button) | Ensures background processes terminate cleanly | | Avoid opening same channel on multiple clients | Prevents exclusive lock conflicts | | Use multi-playback user account if available | Allows concurrent streams per device | | Schedule automatic NVR reboot weekly | Clears stale session locks | SmartPSS will be rejected.
The error "Exclusive" implies the stream is reserved for one user. Check if someone else (or another software like BlueIris, Milestone, or a mobile app) is currently viewing that specific camera. If another device is pulling the "Main Stream" (HD), and the camera is set to "Single Stream" mode, SmartPSS will be rejected. The error message "Failed to start playback