EWS Server Error

ewsservererror.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Note: EwsEditor has replaced the "utf-16" text in the first line with"utf-8" in order for the XML to render in the response web control. -->
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
    <s:Body>
        <s:Fault>
            <faultcode xmlns:a="http://schemas.microsoft.com/exchange/services/2006/types">a:ErrorInternalServerError</faultcode>
            <faultstring xml:lang="en-US">An internal server error occurred. The operation failed.</faultstring>
            <detail>
                <e:ResponseCode xmlns:e="http://schemas.microsoft.com/exchange/services/2006/errors">ErrorInternalServerError</e:ResponseCode>
                <e:Message xmlns:e="http://schemas.microsoft.com/exchange/services/2006/errors">An internal server error occurred. The operation failed.</e:Message>
            </detail>
        </s:Fault>
    </s:Body>
</s:Envelope>