You get this error when displaying a web page in your application:
HTTP Error 401.2 - Unauthorized
Description: You are not authorized to view this page due to invalid authentication headers. Error Code: 0x80070005
Notification: AuthorizeRequest
Module: UrlAuthorizationModule
Requested URL: http://localhost:80/temp/
Physical Path: C:\Temp\CD\
Logon User: ITSUPPORT\Administrator
Logon Method: Negotiate
Handler: StaticFile
This error can occur when your application is using integrated Windows Authentication, but Windows Authentication is not enabled, or your web application is not configured to use an authentication method.
The Microsoft knowledge base describes a variety of solutions: http://support.microsoft.com/kb/942043
Part VII: Troubleshooting Applications
Application Runs But No Data is Displayed