See Attached Sample App (The required/referenced DLLs where too large so they are in the second attachment)

Replace the EWS Endpoint with one that is associated with a valid account.

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The following lines of code execute without error. Running Fiddler DOES show traffic Successfully retrieving information from the EWS Endpoint, but the XamOutlookCalendarView never updates and does show any information or any indication of success, it looks like nothing has happened even though through Fiddler the web traffic can be verified.

                        ewsCredsExchangeConnector.Users = userList;

                        ewsCredsExchangeConnector.UseDefaultCredentials = false;

                        ewsCredsExchangeConnector.ServerConnectionSettings = new ExchangeServerConnectionSettings();

                        ewsCredsExchangeConnector.ServerConnectionSettings.RequestedServerVersion = exchangeVersion;

                        ewsCredsExchangeConnector.ServerConnectionSettings.Url = ews.Url;

                        ewsCredsExchangeConnector.Connect();