Content Porter 2009 SP2 Unable to get list of child items

Error: Unable to get list of child items in Content Porter 2009 Sp2

Communicator returned an error: Could not create or initialize XmlResponder object

Impersonation by this user requires the IIS APPPOOL\DefaultAppPool account to be configured as impersonation user


Solution: In IIS ImportExportService under SDL Tridion website was configured using deafult app pool and my default pool was having different User rather than Network Service, when i changed the user, problem got resolved.

Detailed Error message for reference


<?xml version="1.0" standalone="yes"?>
<tcm:Error ErrorCode="80040302" Category="16" Source="Kernel" Severity="2" xmlns:tcm="http://www.tridion.com/ContentManager/5.0"><tcm:Line ErrorCode="80040302" Cause="false" MessageID="4394"><![CDATA[Unable to Initialize TDSE object.]]><tcm:Token>RESID_4537</tcm:Token><tcm:Token>TDSE</tcm:Token></tcm:Line><tcm:Line ErrorCode="80040302" Cause="true"><![CDATA[Impersonation by this user requires the IIS APPPOOL\DefaultAppPool account to be configured as impersonation user.]]><tcm:Token>IIS APPPOOL\DefaultAppPool</tcm:Token></tcm:Line><tcm:Details><tcm:CallStack><tcm:Location>Tridion.ContentManager.Security.AuthorizationManager.GetImpersonationUserSettings(String)</tcm:Location><tcm:Location>Tridion.ContentManager.Security.AuthorizationManager.LoadAccessToken(String,String)</tcm:Location><tcm:Location>Tridion.ContentManager.Session..ctor(String,String,UserContext)</tcm:Location><tcm:Location>Tridion.ContentManager.BLFacade.SystemFacade.InitializeUserContext(UserContext,String,String)</tcm:Location><tcm:Location>UtilitiesTDS.GetUserContext</tcm:Location><tcm:Location>TDSE.Initialize</tcm:Location><tcm:Location>XMLResponder.Initialize</tcm:Location></tcm:CallStack></tcm:Details></tcm:Error>