C2 Security Update for Windows NT 4.0

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Updated : December 1, 1999

On December 2, 1999, the U.S. Government announced that Microsoft Windows NT Server and Workstation 4.0 had completed a successful evaluation at the C2 level according to the Trusted Computer System Evaluation Criteria (TCSEC). The TCSEC, more familiarly known as the "Orange Book", is perhaps the best-known governmental evaluation process for IT systems. C2 is widely acknowledged to be the highest evaluation rating that can be achieved by a general-purpose operating system. The Windows NT 4.0 evaluation included servers and workstations in six different roles, operating in both TCP/IP networked and stand-alone modes.

For more information, please see the Microsoft Knowledge Base article 244599 in Microsoft TechNet.

Click here to copy 244599i.exe (Intel based) to your computer

Click here to copy 244599a.exe (Alpha based) to your computer

How To Install

  1. This update is packaged in an auto-install format.

    Type the executable name to install it. For example, type "244599i" for x86 platforms (without the quotation marks).

  2. The files can also be extracted from the update without installing them.

    To do this, copy the update to a temporary directory, and type "244599i /x" (without the quotation marks).

    After extracting the files, the update can be installed by typing "hotfix" (without the quotation marks).

Note: To obtain the symbol file, simply follow the instructions in step 2 above.

THE INFORMATION AND UPDATE ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.