Dê uma olhada em ZeroConfigExchange :
In the Windows Registry, navigate to the appropriate subkey for each version of Outlook that is in use: For Outlook 2013: HKEY_CURRENT_USER\Software\Microsoft\Office.0\Outlook\AutoDiscover
Once the key is created, right-click in the right pane and click New, click DWORD Value and type in “ZeroConfigExchange” (without the quotes) and then press ENTER.
Finally, right-click ZeroConfigExchange, click Modify and then in the Value data box, type 1, and then click OK.