To ensure this playback error does not return, implement these best practices:
If you are reading this because your playback failed right now , do this:
To make this permanent, right-click the icon, go to , select the Compatibility tab, check the box for "Run this program as an administrator" , and hit Apply . 3. Update or Replace the dhnetsdk.dll File Failed To Start Playback Netsdk Returns Error Smart Pss
Dahua devices use TCP 37777 for control commands and TCP 37778 for video data (RTP). If your network uses a VPN or VLAN, ensure both ports are open. Port 37777 might be open (you see live view), but if 37778 is closed, playback fails specifically.
When newer versions introduce bugs, rolling back to a stable older release may be the solution. The legacy version has been reported to work reliably with older DVRs. To ensure this playback error does not return,
If you recently upgraded your hardware (DVR or NVR) or swapped an IP camera, your older computer software might not comprehend the recorder's commands. Smart PSS Error Help | IP Cam Talk
: Smart PSS failing to automatically switch to the correct stream type during playback. If your network uses a VPN or VLAN,
The user account in SmartPSS might lack the necessary permissions to access recorded archives.
If the time on your NVR does not match the time on your computer, SmartPSS will request video segments that technically "do not exist" yet according to the device log.