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Windows NT Server 4.0 | Downloads

Security Update, December 5, 2000

Select your language from the drop-down list below and click Next.


Read Me First

This update resolves the "Incomplete TCP/IP Packet" security vulnerability in Windows NT® 4.0. If a malicious user sends a large number of specifically malformed data packets to a Windows NT 4.0 computer on a network that uses the NetBIOS over TCP/IP (NBT) protocol, the affected computer temporarily stops responding to all network requests. This occurs because Windows NT 4.0 cannot process these data packets correctly using the NBT protocol. In rare cases, an attack can cause the affected computer to remain unresponsive until it is rebooted. Download now to ensure your Windows NT 4.0 computer is able to process invalid TCP/IP packets correctly.

For more information on this vulnerability, please read Microsoft Security Bulletin MS00-091.

System Requirements

This update applies to:

  • Windows NT 4.0 Workstation
  • Windows NT 4.0 Server

How to download and install

  1. Select your language from the drop-down list above.
  2. Click Next.
  3. On the following page, click Download Now.
  4. Do one of the following:
    • To start the installation immediately, select Run this Program from its Current Location.
    • To copy the download to your computer for installation at a later time, select Save this Program to Disk.
  5. Click OK.

How to use

Restart your computer to complete the installation.

How to uninstall
  1. Click Start, point to Settings, and then click Control Panel.
  2. Double-click Add/Remove Programs.
  3. Select Windows 4.0 Hotfix [See Q275567 for more information] and click Add/Remove to uninstall.

 Last Updated: Wednesday, April 18, 2001
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