IIS Key Manager Only Allows 512-Bit Size Key (157491)


The information in this article applies to:

  • Microsoft Windows NT Server 4.0
  • Microsoft Internet Information Server 2.0
This article was previously published under Q157491
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx

SYMPTOMS

When you use Key Manager in Internet Information Server (IIS) to create a key, 512 bits is the only size allowed.

CAUSE

The 1381 build (not golden) of Windows NT Server 4.0 is installed.

RESOLUTION

Install the golden, or retail, build (1381). of Windows NT Server 4.0.

MORE INFORMATION

To verify the build installed, check the build number shown during boot. If the build number is (1381) with no dot, the prerelease build of Windows NT 4.0 is installed and needs to be upgraded to the United States/Canada domestic release version.
Modification Type:MinorLast Reviewed:6/23/2005
Keywords:KB157491
©2004 Microsoft Corporation. All rights reserved.