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MS Windows NT 4.0 Service Pack 6a (SP6a)

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Published: November 1, 1999

Note: All Windows NT Service Packs are cumulative, except for the additional features and utilities provided with Service Pack 4 (SP4). Service Pack 6a (SP6a) adds the latest updates (from SP5) to the Windows NT platform.

update for this Service Pack is now available. Read Winlogon Service Update for Windows NT 4.0 Service Pack 6 (SP6 & SP6a) for details and instructions on how to download the update.

Installing Service Pack 6a (SP6a)

Service Pack 6a (SP6a) provides the latest updates to Microsoft Windows NT Workstation 4.0, Windows NT Server 4.0, and Windows NT Server 4.0, Enterprise Edition. SP6a contains known Year 2000 updates for Windows NT 4.0. These Year 2000 updates are also available as separate Web downloads that customers may apply to a Service Pack 4 or 5 system. Providing these options gives organizations the flexibility to choose which path is easier for them to address Year 2000 issues. SP6a is not a required upgrade for Year 2000; Microsoft recommends that each customer consult the SP6a documentation and then determine whether to deploy it.

SP6a includes the following updates to SP6:

  • The update for the SP6 issue with Lotus Notes and other Winsock based applications. This issue prevents connecting to the server when the current user is not logged in with administrator rights. For more information on this issue see the Microsoft Knowledge Base article 245678 in Microsoft TechNet.

  • In accordance with Microsoft's commitment to Year 2000 compliance, SP6a includes an update to the IIS 3.0 log converter utility, convlog. For more information on this see the Microsoft Knowledge Base article 245329 in Microsoft TechNet.

  • Winver.exe has been revised to allow the user to quickly verify whether a system is running SP6a.

Warning To avoid problems, including possible data loss, if you use both Microsoft Outlook and Computer Associates Inoculan, you should verify that you are using the latest version of the Inoculan drivers before installing SP6a. Please visit http://supportconnectw.ca.com/main.asp to obtain the latest drivers. Other applications and prior versions of Service Packs may be affected as well; see the Microsoft Knowledge Base article 244652 for additional details.

Windows NT 4.0 Service Pack 6a (56-bit)

Click here to access Sp6ai386.exe (Intel) or Sp6aaxp.exe (Alpha)

Windows NT 4.0 Service Pack 6a (128-bit)

Click here to access Sp6128i.exe (Intel) or Sp6128a.exe (Alpha)

To extract these files and begin the installation process, for example, at the command prompt, type: SP6ai386.exe (or SP6128i.exe) or double-click the file in My Computer. You can also extract the file into the current folder without launching the installation program by using the command prompt switch /x. For example, at the command prompt, type: SP6ai386 /x (or SP6128i.exe /x)

Note: The SP6a debug symbols, as well as other SP6a support updates, can be obtained by copying and extracting Support.exe to your computer from the ..\Winnt40\Sp6a\Support directory of the Service Packs CD 1 compact disc.

For more information about the Windows NT 4.0 Service Pack 6a, please read the Readme file (included with the service pack).

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