Ensure your browser security allows the plugin to execute on that specific address.
The message means a program you are trying to run has detected that required ActiveX components are missing or not registered on your system. It is prompting you to install them from either the original installation CD or a trusted download source.
For many users, this error is confusing because it references outdated technology (Internet Explorer, ActiveX) and asks for a file from a physical CD in an era where many computers no longer have optical drives. Please Install Ie Activex Ie-plugins.exe From Cd Or Download
If the plugin still won't install, your browser’s security settings may be blocking it.
Are you trying to access a of camera or DVR, or is this for legacy work software ? Ensure your browser security allows the plugin to
ActiveX was a software framework created by Microsoft to allow web browsers to run small programs (plugins) for tasks like playing video or installing updates.
Ensure the plugin is from your hardware manufacturer. For many users, this error is confusing because
Can't install software for DVR (ActiveX) - Spiceworks Community