The MyPhone web interface won't work on my system. I'm using 3CX 7.1.7139. This is on a Windows Vista Pro machine using Cassini. It is the commercial version of 3cx. When i try and get to the MyPhone application from the server computer, http://localhost:5481/myphone, i get the following: Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS. Source Error: Line 155: by Microsoft that offers a single logon and core profile services for member sites. Line 156: --> Line 157: <authentication mode="Forms"> Line 158: <forms cookieless="UseCookies" defaultUrl="UserMain.wgx" enableCrossAppRedirects="false" loginUrl="Logout.aspx" name="myPhone" protection="All" requireSSL="false" slidingExpiration="true" timeout="10"/> Line 159: </authentication> Source File: C:\ProgramData\3CX\Data\Http\Interface\myphone\web.config Line: 157 I can't even see the error when I'm using a different computer... as though MyPhone isn't available to other machines. Any help would be appreciated. Thanks.