Are you seeing this on a plugged into the NVR or on a PC/Phone ? What resolution are your cameras (e.g., 4MP, 8MP/4K)?
: Sometimes the recorder doesn't "release" a channel after a user stops watching. Reboot the NVR/DVR to clear the memory and reset active connection counts. Bandwidth & Resolution Overload Are you seeing this on a plugged into
Hikvision deliberately caps simultaneous playback to prevent interface lag, frame drops, or system freezes. The limit varies by model and firmware version: Reboot the NVR/DVR to clear the memory and
Close unnecessary playback windows before opening a new camera timeline. 2. Switch from Main Stream to Sub Stream Prevention: Managing Your System Better
Close 2 playback windows, or use the NVR’s local monitor for multi-channel playback.
Avoid reviewing cameras on multiple platforms simultaneously. If you have iVMS-4200 software open on a desktop computer, close it entirely before initiating a playback sequence on the Hik-Connect mobile app . 4. Audit User Management & Permissions
Ensure your verification code is entered correctly. Prevention: Managing Your System Better