Microsoft KB Archive/903145

= A 32-bit IPX Winsock application generates a WSAEINVAL error in the x64 editions of Windows Server 2003 and Windows XP Professional =

Article ID: 903145

Article Last Modified on 10/11/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, Standard x64 Edition
 * Microsoft Windows Server 2003, Datacenter x64 Edition
 * Microsoft Windows XP Professional x64 Edition

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SYMPTOMS
On a computer that is running Microsoft Windows Server 2003 x64 Edition or Microsoft Windows XP Professional x64 Edition, a 32-bit Internetwork Packet Exchange (IPX) Windows Sockets (Winsock) application may not work. Instead, the IPX Winsock application generates a WSAEINVAL error.



CAUSE
The communication between a 32-bit application and the 64-bit IPX kernel mode driver is handled through the Transport Driver Interface (TDI) component. However, TDI cannot convert the request to 64-bit, because TDI does not recognize the request as protocol-specific.



WORKAROUND
To work around this problem, recompile the application to the 64-bit mode.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Keywords: kbtshoot kbbug KB903145

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