I'm writing a web server application which needs to access a network drive. I have Windows Authentication and ASP.NET impersonation enabled. I can display the impersonated user, but whenever I attempt to open a directory in ASP.NET, it says access to the directory is denied. I've disabled anonymous authentication. Do I have to register the regular domain accounts in any of the Permissions Group on the Windows Server 2008 R2 in order to get access to the network drive? Modifying the network drive to change it's permissions is not an option.