Mismatched time settings between your PC and the recorder are a primary trigger for playback failures.
Access the device settings via the Dahua Config Tool or the web interface.
: Conflicts often arise during Daylight Saving Time changes, which can lead to errors when searching for footage in a "shifted" time block.
Try moving the playback marker a few seconds before the event starts.
Download a stable version of dhnetsdk.dll from an official source like Cornick Support .
Ensure "Sync PC Time" is enabled so the recorder and SmartPSS use the exact same timestamp. 3. Update the dhnetsdk.dll File