I am trying to switch over the web application pool account on my sharepoint 2010 server. The system was installed/setup using the wizard so the account is set to "Network Service".
I created an account called domain\SPAppPool and tried using the central admin web interface to apply the account to the web service. it looks like change is successful as the user account is listed in IIS. I have also verified that the account has the appropriate permissions within active directory and correct permissions on the sharepoint server's local group accounts.
The problem is that when a user attempts to access the site collection they are prompted for a username and password. changing back to the "network service" account and the credential request goes away.
I assume this is a permissions issue. What am I missing? any help is greatly appreciated.