New Cryptographic APIs Need Backwards Compatibility

ID: Q234538

The information in this article applies to:

Microsoft Windows NT Server version 4.0
Microsoft Windows NT Server, Enterprise Edition version 4.0

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 : kbbug4.00 kbfix4.00 nt4sp5fix
Version : winnt:4.0
Platform : winnt
Issue type : kbbug