Error message when you try to use the ActiveSync Web Administration tool to delete a partnership
Are you experiencing problems when you try to delete a partnership with a Windows Mobile 5.0 device with MSFP installed using the Microsoft Exchange Server ActiveSync Web Administration tool? Perhaps you get a :
Failed to access user’s Mailbox, verify that the mailbox and user account are enabled and functional.
Server Error in ’/MobileAdmin’ Application.
——————————————————————————–The remote server returned an error: (401) Unauthorized.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.WebException: The remote server returned an error: (401) Unauthorized.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[WebException: The remote server returned an error: (401) Unauthorized.]
System.Net.HttpWebRequest.CheckFinalStatus() +680
System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult) +74
System.Net.HttpWebRequest.GetRequestStream() +234
Microsoft.Exchange.AirSync.Admin.Mailbox.propFindRequest(String deviceUri) +240
Microsoft.Exchange.AirSync.Admin.Mailbox.getDevices() +194
Microsoft.Exchange.AirSync.Admin.Devices.refreshDevicesTable() +135
Microsoft.Exchange.AirSync.Admin.Devices.Page_Load(Object sender, EventArgs e) +190
System.Web.UI.Control.OnLoad(EventArgs e) +67
System.Web.UI.Control.LoadRecursive() +35
System.Web.UI.Page.ProcessRequestMain() +750
——————————————————————————–
Version Information: Microsoft .NET Framework Version:1.1.4322.2300; ASP.NET Version:1.1.4322.2300
This can occur if Integrate Windows authentication hasn’t been enabled on the Exadmin virtual directory on the mailbox server, or if the MobileAdmin Web application isn’t running under the ExchangeApplicationPool application pool.
For more information see below MS KB article:

