Issue : On Server "Lync 2013", Lync Control panel is showing error "Lync control panel 2013 "Microsoft SilverLight is not installed or is blocked by security settings" on IE
Resolution :
Open IE
> Select "Tools" option from Menu
> "Internet Options"
> "Security" Tab
> Highlight "Internet" from "Select a zone to view or change your security Settings"
> Customer Level
> Select "ActiveX Controls and Plug-ins"
> "Run ActiveX Controls and Plug-ins"
> Select option "Enable"
> click "Ok"
> Apply
and refresh or reopen CSCP
Resolution :
Open IE
> Select "Tools" option from Menu
> "Internet Options"
> "Security" Tab
> Highlight "Internet" from "Select a zone to view or change your security Settings"
> Customer Level
> Select "ActiveX Controls and Plug-ins"
> "Run ActiveX Controls and Plug-ins"
> Select option "Enable"
> click "Ok"
> Apply
and refresh or reopen CSCP