The NETSDK error can also stem from missing, corrupted, or outdated DLL files within the SmartPSS installation. The primary suspects are:
Dahua frequently updates its NetSDK architecture. If your NVR has modern firmware but you are running an older version of Smart PSS (like version 1.16 or early 2.x versions), they will speak different "languages." Conversely, the newer or SmartPSS Plus might be required for your specific hardware. How to fix it: Uninstall your current version of Smart PSS. Failed To Start Playback Netsdk Returns Error Smart Pss
If you have physically checked the cables and the drive spins but playback still fails for older recordings, the is corrupt. The NETSDK error can also stem from missing,