ASP.Net error: “The identity of application pool is invalid”

Question

My ASP.Net web service cannot run because the application pool is unable to start due to the identity crisis it\'s experiencing.

The user I\'m using in the app pool is a

Answer 1

Posting a simple answer for completeness because I was getting the same error but what fixed it for me was to include the domain with the username when setting the identity. The user was a valid domain user and a user for the server and I added it to the IIS_ group manually but no dice until I tried adding the domain as a prefix, e.g. "us\svc-myAccount".