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Q234538: New Cryptographic APIs Need Backwards Compatibility

Article: Q234538
Product(s): Microsoft Windows NT
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbWinNT400sp5fix
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Server, Enterprise Edition version 4.0 
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SYMPTOMS
========

Calls to the WINTRUST APIs may not work if an older encryption software
development kit (SDK) was used to create these calls. These calls usually do not
work because of differences in supported structure sizes between the two
versions.

CAUSE
=====

This problem occurs because the encryption support file (Softpub.dll) that is
included in Windows NT 4.0 Service Pack 4 is not backwards compatible with the
encryption APIs with regard to structure size.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0. For
additional information, please see the following article in the Microsoft
Knowledge Base:

  Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

The latest service pack is also available at the following Internet location:

  http://www.microsoft.com/windows/servicepacks/

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0. This problem was
first corrected in Windows NT 4.0 Service Pack 5.

Additional query words: 4.00

======================================================================
Keywords          : kbWinNT400sp5fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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