Disable ActiveX filtering feature for the Web Interface site by doing one of the following:

Disable ActiveX filtering globally:
Click on Tools or the Gear icon in the browser menu, select Safety, de-select ActiveX Filtering
(ActiveX filtering is enabled if a “tick” appears next to it and is disabled it the “tick” disappears next to it)

OR

Disable ActiveX filtering for an individual site when ActiveX filtering is enabled globally:
Log on to the Web Interface site and attempt to launch an application, at the end of the address bar a blue warning sign will appear indicating filtered content.
Click the blue warning sign and select Turn off ActiveX Filtering