Int21 Random Write Fails Under Windows NT

 Last reviewed: March 21, 1997
Article ID: Q137927

The information in this article applies to:
  • Microsoft Windows NT Workstation version 3.51
  • Microsoft Windows NT Server version 3.51

SYMPTOMS

An Int21 call, Random Write (22H), from a client running Windows for Workgroups or Windows95 to Windows NT fails. As a result, if you run an older application on the client that relies on the Int21 call, you cannot write to a network drive on computer running Windows NT server.

CAUSE

Reading the trace on SMB Response Open&X from Windows NT, the Open Mode is 0x00FF instead of 0x0072.

WORKAROUND

Use Handler functions instead of FCB calls.

RESOLUTION

To correct this problem, install the fix mentioned below.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. A fix to this problem is in development, but has not been regression-tested and may be destabilizing in production environments. Microsoft does not recommend implementing this fix at this time. Contact Microsoft Product Support Services for more information on the availability of this fix.

Additional reference: prodnt advance msdos programming (fcb section)

Keywords : kbbug3.51 kbother ntfilesys
Version : 3.51
Platform : WinNT

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Last reviewed: March 21, 1997
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