The error on Hikvision devices occurs when the hardware’s connection capacity or bandwidth is fully occupied, preventing new live views or playbacks. This is often due to active sessions being left open on other devices, high-resolution settings straining the NVR/DVR, or software bugs in the Hik-Connect app. Primary Causes
Hikvision devices have built-in limitations on how many "links" or streams they can handle at once. Common causes include:
This is the most effective technical fix for networks with many viewers.