SChannel.dll Updated to Support Multiple SGC Certificate Authorities

ID: Q239850

The information in this article applies to:

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

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

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

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. This problem was first corrected in Windows NT 4.0 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

Additional query words: e-commerce

Keywords : kbinterop ntsecurity ntsp kbbug4.00 kbfix4.00 NT4SP6Fix
Version : winnt:4.0
Platform : winnt
Issue type : kbbug