PRB: CreateFile Fails on Win32s w/ UNC Name of Local Machine

ID: Q129543

1.20 1.30 1.30a 1.30c WINDOWS kbprg kbprb

The information in this article applies to:

• Microsoft Win32s, versions 1.2, 1.3, 1.30a, 1.30c

SYMPTOMS

CreateFile() fails on Win32s if the file name is a UNC name that refers to the local machine.

CAUSE

This is a limitation of Windows for Workgroups version 3.11. The same problem occurs with 16-bit Windows-based applications using OpenFile().

RESOLUTION

Do not use a UNC name to open a file on the local machine.

STATUS

This behavior is by design.

MORE INFORMATION

There is a similar limitation with Windows version 3.1 and LAN Manager. If you create a network drive and try to open a file on the same network share using a UNC name, it will fail. This also happens with 16-bit Windows-based applications.

KBCategory: kbprg kbprb KBSubcategory: W32s Additional reference words: 1.20 1.30 1.30a 1.30c

Keywords          : kbWin32s 
Version           : 1.20 1.30 1.30a 1.30c
Platform          : WINDOWS

Last Reviewed: January 17, 1997