ASP.NET Tutorial/Configuration/identity
Enable impersonation.
<source lang="csharp">
File: Web.config <configuration>
<system.web> <identity impersonate="true" /> </system.web>
</configuration></source>
<source lang="csharp">
File: Web.config <configuration>
<system.web> <identity impersonate="true" /> </system.web>
</configuration></source>