Web service invalid account when published

See more:

C#

ASP.NET

service

Hi all

I have created a web service that connects to an SQL database and uses a stored procedure on that server. However this is irrelevant.

I am new to creating web services, this web service works how i want it to when used against a small test client but when it has come to publishing it - i have encountered problems which im completely unfamiliar with.

I am publishing it locally, but when i try to do so i get:

Web deployment task failed.(The account 'ASPNET' does not appear to be valid. The account was obtained from this location: 'AspNetWorkerProcessIdentityName'.)

The account 'ASPNET' does not appear to be valid. The account was obtained from this location: 'AspNetWorkerProcessIdentityName'.
Some or all identity references could not be translated.

Is there any common reasons at to why this has happened? I've tried a google and it appears people have searched for this before but with no real answer on the web?

Many Thanks!