When you log on and connect to Microsoft Office Project Server 2003 by using Microsoft Office Project Professional 2003 or when you log on and connect to Microsoft Project Server 2002 by using Microsoft Project Professional 2002, you may intermittently experience both of the following symptoms:

• You receive an error message that is similar to the following:
  Connection failed:
  SQLState: '01000'
  SQL Server Error: 53
  [Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionOpen (Connect())
  Connection failed:
  SQLState '08001'
  SQL Server Error: 17
  [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied.
• After you receive the first error message, you are prompted to type your user name and password to log on to Microsoft SQL Server. When you do this, you receive the following error message:
  Microsoft Project
  
  Cannot Connect
  
  Microsoft Project was unable to establish a connection with the selected Microsoft Project Server. This could be caused by a loss of network connectivity, invalid username or password, lack of an enterprise global template, problems with the Microsoft Project Server or database, or your Microsoft Project Server may not have enterprise features enabled.

This issue may occur if either of the following conditions is true:

• You connect to Project Server 2003 or to Microsoft Project Server 2002 over a slow link or from a remote location that is outside the local area network (LAN), and an issue exists that prevents the host name of the computer that is running SQL Server from resolving correctly.
• A Group Policy setting was applied to your computer that changed the regional settings of your computer.

To resolve this issue, use one of the following methods, depending on the version of Microsoft Project Server that you are running.

Microsoft Project Server 2002

If you are running Microsoft Project Server 2002, edit the registry of the Web server to use the IP address of the computer that is running SQL Server. On the computer that is running Microsoft Internet Information Services (IIS), edit the connectInfo registry entry in the following registry key to use the IP address of the computer that is running SQL Server: To do this, follow these steps:

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. Locate the following key registry key:
   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\10.0\MS Project\WebClient Server\ProjectServer\Datasets\Application
4. In the right pane, double-click connectInfo.
5. In the Value data box, change the ServerName entry in the Data Source=ServerName part of the string to the IP address of the computer that is running SQL Server.
   
   For example, the string in the Value data box may look similar to the following, where IPAddress is the IP address of the computer that is running SQL Server:
   Provider=SQLOLEDB;User ID=MsProjectServerUser; Password=Password;Persist Security Info=False;Initial Catalog=ProjectServer;Data Source=IPAddress
6. Click OK, and then quit Registry Editor.

Project Server 2003

If you are running Project Server 2003, use the ConnInfo.exe tool to edit the registry of the server to use the IP address of the computer that is running SQL Server. To do this, follow these steps:

1. Locate the folder that contains the ConnInfo.exe tool, and then double-click ConnInfo.exe.
   
   The ConnInfo.exe tool is located in the Drive:\Program Files\Microsoft Office Project Server 2003\Bin\1033 folder of the computer that is running Project Server 2003. To download the ConnInfo.exe tool, visit the following Microsoft Web site:
   http://www.microsoft.com/downloads/details.aspx?FamilyID=1d30b672-baa0-4030-b036-323b216d7264&displaylang=en (http://www.microsoft.com/downloads/details.aspx?FamilyID=1d30b672-baa0-4030-b036-323b216d7264&displaylang=en)
2. In the Project Server 2003 Connection Information dialog box, click either Single database configuration or Partitioned database configuration.
3. In the SQL Server box, type the IP address of the computer that is running SQL Server, click Save, click OK, and then click Exit.

For additional information about how to troubleshoot a similar error message that may occur when you log on to Microsoft Project Server 2002, click the following article number to view the article in the Microsoft Knowledge Base: For more information about Microsoft Project Server 2002, visit the following Microsoft Web site: