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Windows NT Server 4.0 | Downloads

Security Update, May 19, 2000






Read Me First

This update resolves the "IP Fragment Reassembly" security vulnerability in Windows NT 4.0. Installing this update will minimize the negative effects that fragmented Internet Protocol (IP) datagrams could have on your computer's central processing unit (CPU). IP datagrams are a necessary part of network and Internet communication. If a continuous stream of fragmented IP datagrams with a particular malformation were sent to an affected computer, it could be made to devote most or all of its CPU availability to processing these fragments. The vulnerability does not allow a malicious user to compromise data on the computer or take administrative control over it.

For more information on this vulnerability, please visit Microsoft Security Bulletin MS00-029.

How to download and install
Note Please save your work and close all open programs before installing.

  1. Click the x86 (Intel) or Compaq DIGITAL Alpha link above to download the version of the update that applies to your computer.
  2. Select your language from the drop-down list provided on the following page and click Next.
  3. On the last page, click Download Now and follow the instructions on your screen.

How to use
Restart your computer to complete the install.

How to uninstall

  1. Click Start, point to Settings and click Control Panel.
  2. Double-click Add/Remove Programs.
  3. Select Windows 4.0 Hotfix [See Q259728 for more information] and click Add/Remove to uninstall.


 Last Updated: Monday, February 12, 2001
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