The maximum number of users is limited to 5. However, it also depends on the total bandwidth accessed to this device from clients.
Maybe too many IP cameras have been installed on the LAN, and then the NAT router is out of resource to support more cameras. You could turn off and on the NAT router to clear the out-of-date information inside the router.
To unmount SD card, you’ll have to wait for about two minutes in which time the recording will completely come to a halt.
Go to C:\Windows\Downloaded Program Files and check to see if there is an entry for the file "IPCamera Control". The status column should show "Installed". If the file is not listed, make sure your Security Settings in Internet Explorer are configured properly and then try reloading the device’s home page. Most likely, the ActiveX control did not download and install correctly. Check your Internet Explorer security settings and then close and restart Internet Explorer. Try to browse and log in again.
Check the IP address of device by using the PLANET IP Wizard II program or by UPnP discovery or set the device to default by the Reset button.
The maximum number of users is limited to 20. However, it also depends on the total bandwidth accessed to this device from clients. Therefore, the actual number of connected clients varies depending on streaming mode, settings of resolution, codec type, frame rate and bandwidth. Obviously, the performance of the each connected client will slow down when many users are logged on.
Make sure that your Internet Explorer is version 8.0 or later. If you are experiencing problems, try upgrading to the latest version of Microsoft’s Internet Explorer from the Microsoft webpage.