(1) If your browser is other than IE, please try it with IE. The live view does not work at other browser.

(2) When the number of user connection is exceeded, the video can’t be streamed. The limitation is 10 users including RTSP and SDK connections.
(3) If an old version of active-X is installed → Uninstall the old one at IP installer and install a new one by reconnecting the camera.
(4) Please check camera setup. If the gain value is set to 0 DB, the camera is unable to see anything at night.