128-Bit Encryption Upgrade May Not Work with Service Pack 4 (216270)


The information in this article applies to:

  • Microsoft Internet Explorer 4.01 for Windows NT 4.0
  • Microsoft Internet Explorer 4.0 for Windows NT 4.0
This article was previously published under Q216270

SYMPTOMS

When you upgrade to 128-bit encryption for Internet Explorer on a Windows NT 4.0-based computer with Service Pack 4, the upgrade may not provide 128-bit security.

CAUSE

This behavior occurs because the files that are installed by the 128-bit security update are older than the Service Pack 4 security files already on your computer.

RESOLUTION

To resolve this issue, install Windows NT 4.0 Service Pack 4, 128-Bit North American Version. This is available at the following Microsoft Web site:

http://www.microsoft.com/ntserver/nts/downloads/recommended/NT4SvcPk4/NT4SvcPk4.asp

MORE INFORMATION

For more information about 128-bit encryption, see the following articles in the Microsoft Knowledge Base:

195833 How to Upgrade Internet Explorer to 128-Bit Encryption

176820 Differences Between 128-bit and 40-bit versions of SP3 and SP4

Modification Type:MajorLast Reviewed:7/20/2006
Keywords:kbprb KB216270
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