When attempting to perform a call in IE 11, the connection may fail with a VIDYO_CONNECTORFAILREASON_ConnectionLost error if Protected Mode is enabled (Internet Options > Security). The preferred way of handling this would be by setting the default certificate authority list of the VidyoConnector object. It is recommended that this API be called only when the Vidyo.io enabled app is running on IE, like so:

var userAgent = navigator.userAgent || navigator.vendor || window.opera;

// Set certificate authority list only if running in IE.
isIE = (userAgent.indexOf("MSIE") != -1 ) || (!!document.documentMode == true );​
vidyoConnector.SetCertificateAuthorityList({ certificateAuthorityList: 'default' });​
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