Are you seeing a (like 0x03 or 0x06) along with the NETSDK message? Smart PSS Error Help | IP Cam Talk
This is the most common software-level fix. If the network is unstable, the default protocol may time out. failed to start playback netsdk returns error smart pss best
and ensure the "Monitor" and "Playback" boxes are checked for the relevant cameras. Dahua Wiki Summary Checklist Corrupt SDK dhnetsdk.dll in installation folder Network Lag Use a wired connection and try "Sub Stream" playback Security Block Add SmartPSS to Firewall/Antivirus exclusions Permission Enable "Playback" rights in recorder Account settings Are you seeing a (like 0x03 or 0x06)
: Older versions of SmartPSS (like 2.002) have known bugs where footage is visible on the web interface but fails in the software. Download a fresh dhnetsdk.dll failed to start playback netsdk returns error smart pss best
