Switch to the if you encounter performance-related errors or "Not enough decoding resources" messages alongside Error 23.
Cap the frame rate to 15 FPS or 20 FPS rather than full frame rate if the device returns error 23. Click Save to see if the parameter is accepted. 2. Update Device Firmware and iVMS-4200 Version hikvision error code hcnetsdkdll 23 better
Though Error 23 is "Not Supported," it is sometimes confused with Error 2 ("Not Authorized"). Ensure you are logged in with an admin account to rule out permission-based feature blocking. How to Solve Live View Error on iVMS-4200 - FAQ - Hikvision Switch to the if you encounter performance-related errors
Attempting to use "Smart Event" playback on devices that lack Video Content Analysis (VCA) capabilities. For example, trying to perform a smart search on a NAS drive rather than a specialized NVR. How to Solve Live View Error on iVMS-4200
If the device responds to ping but still gives error 23, focus on port 8000 and SDK version — that’s where 80% of real-world fixes lie.