The Microsoft Project Central Server can authenticate users with Microsoft Windows NT Authentication using a Windows user account, Microsoft Project Central authentication using a logon ID and password, or both. However, a single authentication method must be specified for each user account. Some users can be authenticated using Windows NT Authentication while others are authenticated with Microsoft Project Central authentication.
Project managers can also choose which authentication option they want for their own accounts.
Project managers can use a new Windows User Account field in Microsoft Project 2000 to specify the Windows user accounts for their resources. If a Windows user account is specified for a resource, when a workgroup message is sent to that resource, the Windows user account is used to create the resource's account on Microsoft Project Central, and the resource is authenticated with Windows NT Authentication. If no Windows user account is specified, then by default, the resource name is used to create an account on Microsoft Project Central, and the resource is authenticated with Microsoft Project Central authentication. If a user's authentication method is Windows NT Authentication, then when the user goes to the Microsoft Project Central site, he or she is authenticated automatically and taken to the Microsoft Project Central Home page. If a user's authentication method is Microsoft Project Central authentication, then the user will see a logon page when connecting to the Microsoft Project Central site and will have to type or select a user name and password.