Chrome, Firefox, Internet Explorer, Safari, or Edge keeps asking for a plug-in.
Internet Explorer is the only fully supported browser.
As of a firmware update released on 9/12/2019 for the newer Admiral/Imperial systems, partial support for Chrome, Firefox, and updated Safari browsers has been added. These browsers will allow you to, without a plugin, view one camera at a time in its live-view. These browsers do not yet support any playback.
Safari versions 11 and earlier WILL work for Mac with the plugin, which will need to be downloaded manually from our downloads page.
When you visit your web view with Internet Explorer, the plugin download option will become available. After downloading the plugin, you may need to restart your browser to “Allow” the plugin to run on your NVRs webpage when prompted.

Recommendation: Use the Dedicated Apps instead of a Web Browser
A web browser is not an ideal environment for displaying multiple videos, as it natively can't use hardware acceleration to decode the video. You are going to get better performance using our dedicated applications.