NVRs and DVRs have hard limits on concurrent playback streams. If other users, mobile apps like DMSS, or integrated video management systems (VMS) are accessing the same stream channel, the NVR rejects new requests with an exclusive resource block.
Select the specific user account profile that SmartPSS uses to connect to the recorder, then click . Navigate to the Authority / Permission matrix. NVRs and DVRs have hard limits on concurrent
Locate all instances of , Smart Professional Surveillance System , or PC-NVR . Right-click each process and click End Task . Navigate to the Authority / Permission matrix
Log directly into the NVR/DVR via a web browser or local monitor. Navigate to Management > Storage > HDD Manager . Ensure the status of all hard drives reads "Normal" or "Readable." A status showing "Error," "Absent," or "Unformatted" means the hardware cannot read the data. Log directly into the NVR/DVR via a web
: Software updates can leave behind mismatching network toolkit files ( .dll ) that break video rendering.
The "Failed to start playback: NetSDK returns error - Smart PSS exclusive" error can be frustrating, but by understanding the causes and following the troubleshooting steps outlined in this feature, you should be able to resolve the issue. Remember to keep your NetSDK version up-to-date, verify device configurations, and check network connectivity. If the issue persists, try advanced troubleshooting steps or contact Dahua Technology support for further assistance.