Oftentimes, a locked process from a previous crash prevents the NetSDK from initializing a fresh playback stream. Close the interface.
Copy and paste the new dhnetsdk.dll file directly into that directory.
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
An updated NVR system with an outdated desktop SmartPSS client, or vice versa, results in incompatible video compression protocols or playback commands.
Active SmartPSS processes occasionally hang in the background, locking the SDK port from establishing new video stream commands.