Password Manager, Service unavailable 503


I'm setting up an Password Manager POC and have installed everything using the Administration Guide and the installation completes without any errors. When trying to initalize the instace I get "HTTP Error 503. The service is unavailable." due to the application pool stopping. Iv'e checked and rechecked the requirements for the Application Pool Identiy stated in the admin guide and are pretty sure that I have configured permissions correctly.

However, I'm getting this error in the event log: The user has not been granted the requested logon type at this machine.

What logon type is required for the application pool identity on the server?

Thanks in advance,