Background Information
At the time you installed Project Server, the installation process created a single Project Server user account called Administrator. Before you can access any of the enterprise administration features of Project Server in Microsoft Project Professional, you must create a Project Server login account so that you can log into Project Server using the default Administrator account.
Resolution
To create this Project Server login account, complete the following steps
1. Launch Microsoft Project Professional
2. Click Tools - Enterprise Options - Microsoft Office Project Server Accounts
3. Click the Add button
4. Enter an Account Name for the login account, such as "Project Server Administrator"
5. Enter the URL for Your Project Server instance
6. Click the Test Connection button to verify a valid Project Server connection
7. Select the "Use a Project Server account" option and enter "Administrator" (without quotes) in the User Name field
8. Select the "Set as default account" option and click OK
9. Select the "Manually control connection state" option and click OK
10. Close Microsoft Project Professional and then relaunch the software
11. Click the Connect button
12. In the Project Server Security Login dialog, enter the password you selected at the time you installed Project Server and then click the Go button