SChannel.dll Updated to Support Multiple SGC Certificate Authorities (239850)


The information in this article applies to:

  • Microsoft Windows NT Server 4.0 Terminal Server Edition
  • Microsoft Windows NT Server 4.0
  • Microsoft Windows NT Server, Enterprise Edition 4.0
  • Microsoft Internet Information Server 4.0
This article was previously published under Q239850

SYMPTOMS

When you apply for a Server Gated Cryptography (SGC) digital certificate for a computer running Microsoft Internet Information Server, you cannot obtain and install a digital certificate from a non-VeriSign SGC Certificate Authority.

CAUSE

This behavior occurs because secure channel support in the Schannel.dll file in Windows NT 4.0 does not interoperate with a non-VeriSign SGC Certificate Authority.

RESOLUTION

Windows NT Server or Workstation 4.0

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://support.microsoft.com/directory/overview.asp


Windows NT Server 4.0, Terminal Server Edition

To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition.

This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and Windows NT Server 4.0, Terminal Server Edition Service Pack 6.

MORE INFORMATION

SGC (Server Gated Cryptography) is a security technology that has 128-bit cryptography for online banking and other approved uses. With the application of Windows NT 4.0 Service Pack 6, the Schannel.dll file does support SGC digital certificates from multiple SGC certificate authorities.

For steps on how to obtain an SGC digital certificate, and then install the certificate on Internet Information Server, please visit the following Microsoft Web site:

http://www.microsoft.com/security/tech/sgc/InstallIISCert.asp

The browser you are running needs to support SGC technology as well, which may necessitate the installation of a SGC add-on for that browser. See the Web site above for more information on implementing a SGC-compatible browser.

For more information about security technologies, please refer to the Technologies section at the following Microsoft Web site:

http://www.microsoft.com/security/default.asp

Modification Type:MajorLast Reviewed:10/13/2006
Keywords:kbbug kbfix kbinterop KB239850
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