Alternatively, some users report success by installing a 32-bit version of older Dahua software, such as the [2017 Dahua Version](https://dahuawiki.com/images/Files/Soft ... 170724.zip). Summary of Potential Causes
SmartPSS relies on specific Windows components. If you recently upgraded to Windows 11 (especially "N" versions), you might be missing the Media Feature Pack
If you can view live feeds but cannot query archives, your user profile permissions may be restricted.
If the client is updated, but the component libraries are corrupted or outdated, the API calls made by the UI may not align with the SDK's internal state machine. The SDK may interpret a playback request as an invalid session and return an exclusive lock error. Alternatively, some users report success by installing a
Can you successfully view the for these cameras in Smart PSS? Share public link
Sometimes, multiple instances of SmartPSS or its hidden SDK processes run in the background, locking down the playback data stream. Press Ctrl + Shift + Esc to open the .
Paste the newly acquired file into this directory. Restart your PC and attempt playback again. 3. Verify Account Playback Privileges on the NVR If you recently upgraded to Windows 11 (especially
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The NetSDK error hadn't been a glitch. It had been a warning.
If the database index inside Smart PSS or the firmware on the recorder is corrupted, the SDK handshake will consistently fail. Can you successfully view the for these cameras in Smart PSS
Change the selection from to Main Stream (or vice versa).
Switch it to and click Search again. Note: If the network bandwidth is choked, the NETSDK fails to load high-resolution main streams but successfully streams the lower-resolution sub-stream. 📂 Step 3: Update or Replace the dhnetsdk.dll File