Adjunto un articulo muy bueno sobre como configurar SharePoint para que utilice autenticacion NTLM y para configurar un usuario para que sea utilizado como identidad dentro del Application Pool. To configure an SPN for the domain user account Download and install the Setspn.exe command-line tool. You can download the Setspn.exe tool from the following Microsoft Web site: http://www.microsoft.com/windows2000/techinfo/reskit/tools/existing/setspn-o.asp Note: You must be a Domain Administrator to use the setspn utility. Use Setspn.exe to add an SPN for the domain account. At the command prompt, type the following syntax, and then press ENTER, where ServerName is the fully qualified domain name (FQDN) of the server, Domain is the name of the domain, and UserName is the name of the domain user account: setspn -A HTTP/ServerName Domain\UserName If you install Windows SharePoint Services and choose to use Kerberos authentication but do not configure the domain account Windows SharePoint Servi...