Windows Server Gotcha – Unauthorised 401 on IIS One of the most common issues i see developers having with running websites on IIS7 – 8 is permissions. When IIS7 was made available it introduced the concept of an ‘Application Pool Identity’, which
Windows Server Giving the App Pool Identity folder permissions in IIS7 on Windows Server 2008 (First Release) When setting up a new Application Pool in IIS7 the default user (or identity) is ApplicationPoolIdentity which is a specific user account with minimal rights, created specifically for that application pool to run