D-Link ShareCenter DNS-320L User Manual page 226

Section 4 - Configuration
Logging in to My Surveillance for the first time using Internet Explorer
requires an add-on. The add-on message appears at the top of the
browser, next to the question mark.
Click on the line that says, If you trust the website and the add-on
and want to install it, click here. Then click Install This Add-on for
All Users on this Computer...
D-Link ShareCenter DNS-320L User Manual 220