"Client unable to establish connection" Error when connecting to Project Server 2003

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Article ID: 555105 - View products that this article applies to.
Author: Brian Kennemer MVP
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SUMMARY

This error occurs if the version of MDAC on the client and on the server are not the same version. Making sure that these versions are the same on client and server fixes this error.

SYMPTOMS

When you connect to Project Server 2003 with Project Professional you see the error below. When you click OK a SQL login dialog box is displayed.
 
Connection Failed:

SQLState: 01000

SQL Server Error 1326

[Microsoft][ODBC SQL Server Driver][Named Pipes]ConnectionOpen (CreateFile())

Connection Failed:

SQLState 08001

SQL Server Error: 1326

[Microsoft][ODBC SQL Server Driver] Client unable to establish connection

CAUSE

This error can occur if the version of MDAC (Microsoft Data Access Components) on the client is different than the version of MDAC on the Project Server.

RESOLUTION

Using the MDAC Component checker verify the version of MDAC on the Client machine and the Project Server machine.
You can download this tool here: http://www.microsoft.com/downloads/details.aspx?FamilyID=8f0a8df6-4a21-4b43-bf53-14332ef092c9&displaylang=en
 
After you have verified that the version of MDAC on Client and Server are not the same, ensure that the client and server have the same version of MDAC installed by updating the MCAC installation on either the client or the server.

MORE INFORMATION

No additional information.

Properties

Article ID: 555105 - Last Review: May 6, 2004 - Revision: 1.0
APPLIES TO
  • Microsoft Office Project Server 2003
  • Microsoft Office Project Professional 2003
Keywords: 
kbpubmvp kbpubtypecca kbhowto KB555105
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