Application Pool Identity with AD user

Dear all,

I just created a new Application Pool in IIS 7.5 and I want to set the identity to an AD user called dev_usr.

Dev_usr does not have any rights yet. For now it is a simple AD account which can't connect to any machine yet.

Now I want to assign the user dev_usr to the application pool (Advanced settings -> Identity).

Unfortunately the application pool does not start with this user defined. Which rights (minimum rights) do I need to give the AD user dev_usr in order to make it work?

Btw. I tested with an AD account which is local and that worked.

Best regards,

Jeppen