Microsoft KB Archive/929152

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You cannot connect to a local instance of SQL Server on a Windows XP-based computer or on a Windows 2000-based computer when you use "localhost" in the pipe name

Article ID: 929152

Article Last Modified on 11/20/2007



APPLIES TO

  • Microsoft SQL Server 2005 Developer Edition
  • Microsoft SQL Server 2005 Enterprise Edition
  • Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
  • Microsoft SQL Server 2005 Enterprise X64 Edition
  • Microsoft SQL Server 2005 Standard Edition
  • Microsoft SQL Server 2005 Standard X64 Edition
  • Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
  • Microsoft SQL Server 2000 Developer Edition
  • Microsoft SQL Server 2000 Developer Edition
  • Microsoft SQL Server 2000 Enterprise Edition
  • Microsoft SQL Server 2000 Enterprise Edition 64-bit
  • Microsoft SQL Server 2000 Standard Edition



Bug #: 443555 (SQLBUDT)


SYMPTOMS

On a Microsoft Windows XP-based computer or on a Microsoft Windows 2000-based computer, you use the Named Pipes protocol to connect to a local instance of Microsoft SQL Server 2005 or Microsoft SQL Server 2000. When you use "localhost" in the pipe name, you cannot connect to the instance of SQL Server. Depending on the tool that you use to connect to the instance of SQL Server, you experience one of the following issues:

  • If you use the Osql.exe command-line utility to connect to the local instance of SQL Server 2000, you receive the following error message:

    [DBNETLIB]SQL Server does not exist or access denied. [DBNETLIB]ConnectionOpen (Connect()).

  • If you use the Sqlcmd.exe command-line utility to connect to the local instance of SQL Server 2005, you receive the following error message:

    HResult 0x34, Level 16, State 1 Named Pipes Provider: Could not open a connection to SQL Server [52]. Sqlcmd: Error: Microsoft SQL Native Client : An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections.

    Sqlcmd: Error: Microsoft SQL Native Client : Login timeout expired.

Note This issue does not occur on computers that are running Microsoft Windows Server 2003 or later versions of Windows.

CAUSE

This issue occurs because the version of Microsoft Data Access Components (MDAC) that is included with Windows XP and Windows 2000 does not support using "localhost" in a pipe name.

RESOLUTION

To resolve this issue, use one of the following methods:

  • Use an alternative representation of the name of the local host address instead of "localhost". Possible alternative representations include the following:
    • 127.0.0.1
    • "."
    • The actual local host name
  • Use a different connection protocol, such as TCP/IP.


STATUS

This behavior is by design.

MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates


Keywords: kbinfo kbtshoot kbprb kbpubtypekc kbexpertiseadvanced KB929152