Windows Nt Sp6

This page, and portions of this site, were created for historical purposes. They have been archived and are no longer being updated.

Windows Nt 4.0 Sp6a
Windows Nt Sp6a
Windows Nt4 Sp6
Windows Nt 4.0 Sp6 Iso

This page has been optimized for 16-bit Windows 3.x/3.1x/NT 3.x/NT 3.5x operating
systems with 16-bit Netscape Navigator 2.01, and higher. The 16-bit Netscape is
compatible with Windows 95 and NT 4.0, but for 32-bit performance those users
can install 32-bit Netscape Navigator 2.01.

Install NT4 on generic Intel Dell hardware, install SP6 and IE6 IEAK, any updates that were left, and then image it via ghost. Once the image was down on a new machine, ghostwalker was then run to change the SID and a script changed the machine name before booting into NT and scripting app installs. Download Windows NT 4.0 Service Pack 6 Hotfix (x86) for Windows to get the hotfix for Windows NT 4.0 Service Pack 6 running on Intel machines.

Copyright Holders Opnet modeler 14.5 free download.

This page was created with one purpose in mind - the sharing and preservation of old and
pre-release software that has long since fallen out of use. Many of us grew up experimenting
with old computers and software, and we wish to continue providing the opportunity to learn
and experiment with old software for the next generation of geeks.

If you still desire for a software title you own a copyright for be removed from our archive,
please send an email to admin at sdfox7 dot com.

In this email, we request that you identify who you are, if you are acting as a proxy for a
copyright holder, the exact files that you desire to have removed, and any helpful contact
information, including phone numbers or reply-to email addresses.

Please digitally sign all requests sent to this email per U.S. standards - PGP/GPG is highly
preferred.

Below are the links to the Microsoft Windows service packs and boot disks:

Windows NT 3.1 (1993) - Microsoft Windows NT 3.1 SP3 Service Pack 3 (Floppy Install/CD Install) 10-NOV-1994 http://sdfox7.com/nt31/NT31SP3.ZIP Windows NT 3.5 (1994) - Microsoft Windows NT 3.5 SP3 Service Pack 3 (CD Install) 13-SEP-1995 http://sdfox7.com/nt35/SP3_35I.EXE Windows NT 3.51 (1995) - Microsoft Windows NT 3.51 SP2 Service Pack 2 (Floppy/CD Install) 11-OCT-1995 http://sdfox7.com/nt351/SP2_351I.EXE NT 3.51 boot disk 1: - Microsoft Windows NT 3.51 SP3 Service Pack 3 NTDISK1.EXE 14-DEC-95 http://sdfox7.com/nt351/SP3_351I.EXE NT 3.51 boot disk 2: NTDISK2.EXE

NT 3.51 boot disk 3: - Microsoft Windows NT 3.51 SP4 Service Pack 4 NTDISK3.EXE 14-MAR-1996 http://sdfox7.com/nt351/SP4_351I.EXE

- Microsoft Windows NT 3.51 SP5 Service Pack 5 23-SEP-1996 http://sdfox7.com/nt351/SP5_351I.EXE Flexi 8 software windows 7 64-bit.

- Microsoft Windows NT 3.51 PostSP5 Y2KFix 03-NOV-1998 http://sdfox7.com/nt351/Y2K351-I.EXE Windows NT 4.0 (1996) - Microsoft Windows NT 4.0 SP1 Service Pack 1 16-OCT-1996 http://sdfox7.com/nt40/SP1_400I.EXE

NT 4.0 boot disk 1: - Microsoft Windows NT 4.0 SP2 Service Pack 2 NT4WORK1.EXE WORKSTATION 14-DEC-1996 NT4SERV1.EXE SERVER http://sdfox7.com/nt40/SP2_400I.EXE

NT 4.0 boot disk 2: - Microsoft Windows NT 4.0 SP3 Service Pack 3 NT4WORK2.EXE WORKSTATION 15-MAY-1997 NT4SERV2.EXE SERVER http://sdfox7.com/nt40/NT4SP3_I.EXE

NT 4.0 boot disk 3: - Microsoft Windows NT 4.0 SP4 Service Pack 4 NT4WORK3.EXE WORKSTATION 25-OCT-1998 NT4SERV3.EXE SERVER http://sdfox7.com/nt40/SP4I386.EXE

- Microsoft Windows NT 4.0 SP4 Service Pack 4 25-OCT-1998 (high-encryption 128-bit) http://sdfox7.com/nt40/hiencry/sp4/NT4SP4I.128.EXE

- Microsoft Windows NT 4.0 SP5 Service Pack 5 04-MAY-1999 http://sdfox7.com/nt40/SP5I386.EXE

- Microsoft Windows NT 4.0 SP5 Service Pack 5 04-MAY-1999 (high-encryption 128-bit) http://sdfox7.com/nt40/hiencry/sp5/MSNT128.EXE

- Microsoft Windows NT 4.0 SP6 Service Pack 6 22-NOV-1999 http://sdfox7.com/nt40/SP6I386.EXE

- Microsoft Windows NT 4.0 SP6 Service Pack 6 22-NOV-1999 (high-encryption 128-bit) http://sdfox7.com/nt40/hiencry/sp6/MSNT128.EXECreated with Netscape Navigator 2.01 Gold
Program release build: Monday, March 18, 1996
Microsoft Windows 95, 4.00.950a (Service Pack 1)
Copyright © 1996 Netscape Communications Corporation

Introduction:

Occasionally Microsoft issue a series of corrections and / or additions to an operating system after it's commercial release. The purpose of these additional patches is to:

Remove a security exploit or vulnerability.
Correct bugs or oversights in the original design of the Operating System.
Enhance support for existing hardware or add support for new hardware produced after the OS release.
Change the way hardware is supported to allow for unexpected behaviour.
To change the way in which information in the OS is presented to ease operation, configuration or setup.

These patches are normally referred to as a 'Service Pack' or 'Hotfix'. A Service Pack is a major package which often corrects or changes hundreds of OS items simultaneously. A Hotfix is usually aimed at correcting only one, or a small number of items. In some instances, several hotfixes may be combined into a package referred to as a 'Rollup'.

For a more detailed summary of the terminology used by Microsoft to describe the types of patches and their ranking of importance see Knowledgebase article 824684 - Description of the Standard Terminology That is Used to Describe Microsoft Software Updates.

Service Packs are ALWAYS cumulative - that is, it is only necessary that you apply the most recently released one for your Operating System - all revisions which existed in previous Service Packs are included in the latest release. Hotfixes and Rollups are NOT cumulative and must be individually applied to a system - the order in which they are applied is also important.

A Service Pack, Hotfix or Rollup will automatically update all necessary files on the system - it is not necessary for you to manually copy, rename or delete any system files during their application. After the update completes, a shutdown and restart will occur to finalise the file replacements. This is required to allow NT to replace files that were in use or otherwise locked whilst the system is running.

NT 4.0 and Service Pack Status:

The table below outlines the history of Windows NT 4.0. The dates apply to all 'flavours' including Server, Workstation, Terminal Server Edition and Enterprise Edition unless otherwise noted.

Title	Date Released	Support Ceased
Windows NT 4.0 OS (Build 1381)	29 July 1996	31 December 2004 - See Note Below
Service Pack 1	16 October 1996	14 March 1997
Service Pack 2	14 December 1996	15 August 1997
Service Pack 3	15 May 1997	25 January 1999
Service Pack 4	25 October 1998	4 August 1999
Service Pack 5	4 May 1999	30 February 2000
Service Pack 6a	30 November 1999	30 June 2004 - See Note Below
Post SP6a Security Rollup (SRP)	26 July 2001	30 June 2004 - See Note Below

Note: SECURITY ONLY hotfix support extended to 31 December 2004 for all versions EXCEPT Workstation. All support for Workstation ended on 30 Jun 2004. For further information, see these notes.

The current revision level for Windows NT 4.0 Workstation and Server is Service Pack 6a. To see what problems have been addressed in this and previous service packs, look at the following Knowledgebase articles:

241211 - List of Bugs Fixed in Windows NT 4.0 Service Pack 6/6a (Part 1)
244690 - List of Bugs Fixed in Windows NT 4.0 Service Pack 6/6a (Part 2)
225037 - List of Bugs Fixed in Windows NT 4.0 Service Pack 5 (Part 1)
244974 - List of Bugs Fixed in Windows NT 4.0 Service Pack 5 (Part 2)
150734 - List of Bugs Fixed in Windows NT 4.0 and Terminal Server Edition Service Pack 4 (Part 1)
194834 - List of Bugs Fixed in Windows NT 4.0 and Terminal Server Edition Service Pack 4 (Part 2)
224793 - List of Bugs Fixed in Windows NT 4.0 and Terminal Server Edition Service Pack 4 (Part 3)
224792 - List of Bugs Fixed in Windows NT 4.0 Service Pack 1, 2 and 3
152734 - How to Obtain the Latest Windows NT 4.0 Service Pack

For reference, here are the counts of the number of issues addressed by each Service Pack released to date for NT 4.0:

**Service Pack Bug Counts**
Service Pack	Issues Addressed
Service Pack 1	9
Service Pack 2	142
Service Pack 3	181
Service Pack 4	713
Service Pack 5	239
Service Pack 6/6a	278
Post SP6a SRP	53
Total:	1615

To verify your current Service Pack level do the following:

Start
Run
Type winver in the box
Press Enter

If the dialogue box presented includes the text 'Revised Service Pack 6a' then it has already been applied to the system. For a more details and other methods to confirm what Service Pack has been installed see Microsoft Knowledgebase article 132475 - Determining If a Service Pack Has Been Installed.

After Service Pack 6a is applied, you can then make your way through the list of hotfixes presented in the table below. My suggestion is to stick to the order presented unless you have good reasons for changing it. Most of the hotfixes are SECURITY related. If you have doubts about a vulnerability consult the relevant Security Bulletin from Microsoft (also a 'clickable' link in the table) for details.

WARNING: If you add software to your system:

by using Control Panel > Add/Remove Programs > Windows NT Setup (that results in copying files from the original NT 4.0 install CD)
or through normal software 'updating' system .dll files

it may be necessary to repeat the installation of the Service Pack and hotfixes.

Failure to follow correct procedure may result in STOP errors. To avoid this situation reapply the required Service Pack, Hotfixes and / or Rollups immediately after the original files have been copied from the NT 4.0 master CD and BEFORE the system is rebooted. If in doubt, ask for guidance.

A good file tracking application like FileImg from the Windows NT 4.0 Resource kit can simplify matters by making it clear whether anything on the base OS install has been modified or regressed.

If you want to check which hotfixes are installed on a system I recommend 'PSInfo', part of the PSTools package from SysInternals.

Check Security Status:

Bear Windows has written an excellent article on how to use MBSA (Microsoft Baseline Security Analyser) on NT4.0 systems. MBSA checks the security and patch status of many Windows components, not just the Operating System itself. It is located at: 'Problem 12: How to control security patches and critical updates installed in Windows NT/2K/XP/2003'

Secunia run an excellent web site that tracks known vulnerbilities in computer software (including Operating Systems), their seriousness, and patches to correct the problems. Here are the links for Windows NT4.0:

How to Use This List:

The numbers of the Knowledgebase articles presented are 'clickable' links that will open the full text of the item (by going to the Support site at Microsoft.com) in a NEW browser window. Close the window to return to this site.

Colour coding is used to signify the level of danger an unpatched system may encounter as follows:

RED	DANGER	NO PATCH EXISTS FOR THIS ISSUE. Notes may detail means by which the vulnerability can be lessened or negated.
Pink	CRITICAL	It is VITAL that this patch be installed to ensure system safety.
Light Grey	Required	Patch is STRONGLY recommended.
Light Yellow	Optional	This patch may be important, but is only required in specific circumstances as detailed in the Notes.

You can download the required patch from the Microsoft servers using the supplied link on the relevant Knowledgebase page. Hotfixes that have been obsoleted by more recent patches are NOT mentioned in this list, and do not have to be applied.

Please read the notes relating to the Service Pack or Hotfix before applying it to your system. In some cases, failure to follow the correct procedure when applying a patch may lead to an unbootable system.

Article Number	Title	Security Bulletin	Notes
242294	MS99-041: Security Descriptor Allows Priviledge Elevation on Remote Computers	MS99-041	None
244599	Fixes Required in TCSEC C2 Security Evaluation Configuration for Windows NT 4.0 Service Pack 6a	None	Apply Service Pack 6a First
246009	Windows NT 4.0 Service Pack 6a Available	None	None
258437	FIX: GetEffectiveRightsFromAcl() Fails in Service Pack 6	None	Apply Service Pack 6a First
272386	Upgrade Prompt for Windows Media Player Appears Continually	None	Only Required if Media Player V6.4 Installed - Manual Registry Patch
299444	Post Windows NT 4.0 Service Pack 6a Security Rollup Package (SRP)	Additional Information Below	Requires Service Pack 6a First - Caution: See KB Articles 305462, 305929, 307866, 318420 and 326248 Before Applying
300987	Windows NT 4.0 Winbond Super I/O Floppy Disk Controller May Not Report Data Underrun or Overrun Condition Correctly	None	Only Required for Hardware Specified
304158	Patch for 'HyperTerminal Buffer Overflow' Vulnerability in Windows NT 4.0	MS00-079	Only Required if HyperTerminal Accessory is Installed
307866	You Cannot Log On to the Computer After You Run a Repair Process if SRP is Installed	None	Caution: Ensure This Hotfix Applied After Security Rollup 299444
314147	MS02-006: An Unchecked Buffer in the SNMP Service May Allow Code to Run	MS02-006	Only Required if SNMP Service is Installed
318138	MS02-029: Unchecked Buffer in Remote Access Service Phonebook Allows Code to Run	MS02-029	None
320206	MS02-024: Authentication Flaw in Windows Debugger Can Cause Elevated Privileges	MS02-024	None
320920	MS02-032: Windows Media Player Rollup Available	MS02-032	Only Required if Media Player V6.4 Installed - This Patch Supersedes and Totally Replaces 308567, 320944, 321678 Manual Registry Patches Required - See KB Articles 272386 and 320944 for further details
323172	Flaw in Certificate Enrolment Control May Cause Digital Certificates to be Deleted	MS02-048	None
323255	MS02-055: Unchecked Buffer in Windows Help Facility May Allow Attacker to Run Code	MS02-055	Only Required if Hypertext Help Facility Installed
326830	MS02-045: Unchecked Buffer in Network Share Provider May Lead to Denial-of-Service	MS02-045	None
331953	MS03-010: Flaw in RPC Endpoint Mapper Could Allow Denial of Service Attacks	MS03-010	Caution: No Available Patch for NT 4.0 - Ensure Port 135 is blocked by Firewall
810833	Unchecked Buffer in the Locator Service Might Permit Code to Run	MS03-001	None
814078	MS03-008: Flaw in Windows Script Engine May Allow Code to Run	MS03-008	Only Required if Microsoft Java Virtual Machine Installed
815021	MS03-007: Unchecked Buffer in Windows Component May Cause Web Server Compromise (ntdll.dll)	MS03-007	None
817606	MS03-024: Buffer Overrun in Windows Could Lead to Data Corruption	MS03-024	None
819696	MS03-030: Unchecked Buffer in DirectX Could Enable System Compromise	MS03-030	Only Required if Media Player V6.4 or Internet Explorer V6.0 (SP1) Installed
823559	MS03-023: Buffer Overrun in the HTML Converter Could Allow Code Execution	MS03-023	Only Required if HTML Authoring Software (eg: Office) Installed
823803	MS03-029: A Flaw in a Windows Function Might Allow Denial of Service	MS03-029	Caution: See KB Article 825501 Before Applying - This Patch Refuses to Apply on a Workstation System (See Note 1)
824105	MS03-034: Flaw in NetBIOS Could Lead to Information Disclosure	MS03-034	This Patch Refuses to Apply on a Workstation System (See Note 1)
828035	MS03-043: Buffer Overrun in Messenger Service Could Allow Code Execution	MS03-043	Caution: See KB Article 831579 Before Applying
828741	MS04-012: Cumulative Update for Microsoft RPC/DCOM	MS04-012	Danger: Known Security Exploit - Ensure this Hotfix is Applied. This Patch Supersedes and Totally Replaces 823980 (MS03-026) and 824146 (MS03-039)
832353	FIX: Some URL Script Commands Do Not Work After You Apply Windows Media Update From Knowledgebase Article 828026	None	Only Required if Media Player V6.4 Installed. This Patch Supersedes and Totally Replaces 828026 See 828026 for Important Information on Setting Registry Controls
835732	MS04-011: Security Update for Microsoft Windows	MS04-011	Danger: Critical Security Status - Ensure this Hotfix is Applied. This Patch Supersedes and Totally Replaces 329115 (MS02-050), 328310 (MS02-071), 811493 (MS03-013), 823182 (MS03-041), 824141 (MS03-045) and 828028 (MS04-007) Caution: See KB Article 841180 and 841384 Before Applying
840987	MS04-032: Security Update for Microsoft Windows	MS04-032	This Patch Refuses to Apply on a Workstation System (See Note 2)
841356	MS04-037: Vulnerability in Windows Shell Could Allow Remote Code Execution	MS04-037	This Patch Supersedes and Totally Replaces 839645 (MS04-024)
841533	MS04-031: Vulnerability in NetDDE Could Allow Remote Code Execution	MS04-031	This Patch Refuses to Apply on a Workstation System (See Note 2)
841872	MS04-020: A Vulnerability in POSIX Could Allow Code Execution	MS04-020	None
870763	MS04-045: Vulnerability in WINS Could Allow Remote Code Execution	MS04-045	Only Required for Server System Providing WINS
873339	MS04-043: Vulnerability in HyperTerminal Could Allow Code Execution	MS04-043	Only Required if HyperTerminal Accessory is Installed - This Patch Refuses to Apply on a Workstation System (See Note 2)
873350	MS04-029: Vulnerability in RPC Runtime Library Could Allow Information Disclosure and Denial of Service	MS04-029	This Patch Refuses to Apply on a Workstation System (See Note 2)
883935	MS04-036: Vulnerability in NNTP Could Allow Code Execution	MS04-036	Only Required for Server System Providing NNTP Service
885249	MS04-042: A Vulnerability in DHCP Could Allow Remote Code Execution and Denial of Service	MS04-042	Only Required for Server System Providing DHCP Service
885250	MS05-011: Vulnerability in Server Message Block Could Allow Remote Code Execution	MS05-011	Caution: No Available Patch for NT 4.0 - Primary Threat would be from SMB traffic within the LAN
885834	MS05-010: Vulnerability in the License Logging Service Could Allow Code Execution	MS05-010	Only Required on a Server System Running Licensing Service
885835	MS04-044: Vulnerabilities in Windows Kernel and LSASS Could Allow Elevation of Privilege	MS04-044	This Patch Refuses to Apply on a Workstation System (See Note 2)
885836	MS04-041: A Vulnerability in WordPad Could Allow Code Execution	MS04-041	This Patch Refuses to Apply on a Workstation System (See Note 2)
890175	MS05-001: Vulnerability in HTML Help Could Allow Code Execution	MS05-001	Only Required if Internet Explorer V6.0 or above is Installed Caution: See KB Articles 892641 and 892675 Before Applying
891711	MS05-002: Vulnerability in Cursor and Icon Format Handling Could Allow Remote Code Execution	MS05-002	This Patch Refuses to Apply on a Workstation System (See Note 2)
912919	MS06-001: Vulnerability in Graphics Rendering Engine Could Allow Remote Code Execution	MS06-001	Caution: No Available Patch for NT 4.0 - Files of Type .wmf should be handled with care
921883	MS06-040: Vulnerability in Server Service Could Allow Remote Code Execution	MS06-040	Caution: No Available Patch for NT 4.0 - Ensure TCP Ports 139 and 445 are blocked by Firewall

Notes:

Microsoft offer a patch for Workstation by making a request by phone or email to customer support. Alternately, see the procedure described here.
These patches are officially 'unsupported' by Microsoft for use on a Workstation system. This is merely a commercial decision. The hotfix.inf can be adjusted to override this - see the procedure described here.

Additional Information Regarding the 'Post Service Pack 6a Security Rollup' (SRP - Hotfix Q299444):

The Security Rollup (SRP) is a single package which contains the following 53 hotfixes which had been previously released:

Microsoft Security Bulletin MS99-003.	Microsoft Security Bulletin MS99-019.
Microsoft Security Bulletin MS99-022.	Microsoft Security Bulletin MS99-029.
Microsoft Security Bulletin MS99-039.	Microsoft Security Bulletin MS99-046.
Microsoft Security Bulletin MS99-047.	Microsoft Security Bulletin MS99-053.
Microsoft Security Bulletin MS99-055.	Microsoft Security Bulletin MS99-056.
Microsoft Security Bulletin MS99-057.	Microsoft Security Bulletin MS99-058.
Microsoft Security Bulletin MS99-061.	Microsoft Security Bulletin MS00-003.
Microsoft Security Bulletin MS00-004.	Microsoft Security Bulletin MS00-005.
Microsoft Security Bulletin MS00-006.	Microsoft Security Bulletin MS00-007.
Microsoft Security Bulletin MS00-008.	Microsoft Security Bulletin MS00-018.
Microsoft Security Bulletin MS00-019.	Microsoft Security Bulletin MS00-021.
Microsoft Security Bulletin MS00-023.	Microsoft Security Bulletin MS00-024.
Microsoft Security Bulletin MS00-027.	Microsoft Security Bulletin MS00-029.
Microsoft Security Bulletin MS00-030.	Microsoft Security Bulletin MS00-031.
Microsoft Security Bulletin MS00-036.	Microsoft Security Bulletin MS00-040.
Microsoft Security Bulletin MS00-044.	Microsoft Security Bulletin MS00-047.
Microsoft Security Bulletin MS00-052.	Microsoft Security Bulletin MS00-057.
Microsoft Security Bulletin MS00-060.	Microsoft Security Bulletin MS00-063.
Microsoft Security Bulletin MS00-070.	Microsoft Security Bulletin MS00-078.
Microsoft Security Bulletin MS00-080.	Microsoft Security Bulletin MS00-083.
Microsoft Security Bulletin MS00-086.	Microsoft Security Bulletin MS00-091.
Microsoft Security Bulletin MS00-094.	Microsoft Security Bulletin MS00-095.
Microsoft Security Bulletin MS00-100.	Microsoft Security Bulletin MS01-003.
Microsoft Security Bulletin MS01-004.	Microsoft Security Bulletin MS01-008.
Microsoft Security Bulletin MS01-009.	Microsoft Security Bulletin MS01-017.
Microsoft Security Bulletin MS01-025.	Microsoft Security Bulletin MS01-026.
Microsoft Security Bulletin MS01-033.

Making the Latest Hotfixes Work on Workstation:

<Short political rant follows>
Microsoft have taken the extraordinary position of ending security hotfix support for Workstation 6 months prior to Server. I'm afraid I am left with no option but to conclude that this is a grubby commercial decision in the ongoing campaign of trying to kill NT4 off. If you check the 'Product Lifecycle' page at the Microsoft website, you will discover the NT4 (and specifically Workstation) has a remarkably SHORTER OS product lifecycle as compared to the latest releases. (Windows 2000, Windows XP and Windows Server 2003)

To attempt to shorten it's life still further, by denying users access to essential security patches, is unconscionable. It could be argued that it is essential that these hotfixes be applied if at all possible, to lessen any security risks exposed by the 'holes' in the OS. It could be further argued that Microsoft, in taking the deliberate step of refusing to offer these patches for Workstation, is attempting to convince customers that the OS is now 'unsafe' and should be upgraded. I also believe the timing of these hotfixes is extremely questionable. How convenient it is that such a major raft of serious security flaws are found only 3 months after support has ended.

I consider this further compelling evidence of a deliberate campaign to end Windows NT 4.0 whilst it is still a useful and active participant in general computing.
<EOR>

The reality is that the security hotfixes released after 30 June 2004, and that are supposedly 'NT4 Server only', are able to be used on Workstation equally as well. To adjust the patches for use, expand the contents of the downloaded .exe file (using a programme like WinZip) into a convenient folder. Make sure that all the content of the patch is grouped together in this one place. Manually edit the included hotfix.inf file in the package as described here:

Sample Excerpt from a hotfix.inf file: [Version] Signature='$Windows NT$' NtBuildToUpdate=1381 NtMajorVersionToUpdate=4 NtMinorVersionToUpdate=0 NtServicePackVersion=1536 NtMinimumServicePackVersion=1536 HotfixNumber=%HOTFIX_NUMBER% TermServHotfix=0 TermServBuild=419 LanguageType=%LangTypeValue% InstallPlatform=0 ExtendedSupport=1 <=Add This text RequiredFreeSpaceNoUninstall=5 RequiredFreeSpaceWithUninstall=5
Save the amended hotfix.inf in place of the original expanded from the supplied package. Apply the hotfix by simply double-clicking 'hotfix.exe'. The patch should now execute and apply normally.

ACKNOWLEDGMENT: This technique was first announced in October 2004 by Reed Darsey at www.networksecurityarchive.org. I have since independently verified it's accuracy, using Microsoft supplied 'Workstation enabled' patches for the items referred to in Knowledgebase articles 823803 and 824105.

Cleaning Up a System After Hotfixes / Service Packs:

When Hotfix.exe or Update.sys replace files on a machine it builds a series of 'back out' folders with names in the form $NTUninstallxxxxxx$ (the xxxxxx section is unique for each patch applied and based on the Hotfix number) in the %systemroot% (usually this is WinNT). When you apply a Service Pack the creation of this 'back out' folder is optional, determined by a button you press at the EULA screen of the Service Pack.

WARNING: Microsoft are inconsistent in their creation of 'back out' folders. In some instances, uninstall information is placed in a folder in 'Program FilesUninstall Information' instead.

Windows Nt 4.0 Sp6a

If you are satisfied that the changes made to your system by Hotfixes and/or Service Packs are stable, and you no longer require the ability to be able to 'back out' of the changes, you can remove this uninstall information. This will often free considerable amounts of space in the boot partition. You may simply delete the corresponding $NTUninstall --- $ folder and all it's contents.

The Hotfix / Service Pack also adds an entry in the 'Add/Remove Programs' applet of Control Panel. In the interests of not causing future confusion, it is advisable that the uninstall entry be removed from the list, since deletion of the $NTUninstall --- $ folder has rendered the uninstall from Control Panel impossible.

To remove the redundant entries (they take the form of Qxxxxxx or KBxxxxxx) from the 'Add/Remove Programs' section of Control Panel, manual editing of the Registry is required. If you unfamiliar with this process, or unsure of what you are doing, seek out experienced assistance. Incorrectly editing the Registry can irreparably damage an NT installation.

Windows Nt Sp6a

Procedure:

Open the registry with RegEdit.exe. Navigate to the key:

Windows Nt4 Sp6

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall

Under this key you will find a subkey in the form Qxxxxxx or KBxxxxxx for each Hotfix / Service Pack applied. Delete the appropriate subkey for the hotfix that had it's 'back out' folder deleted.

WARNING: Service Packs / Hotfixes / Rollups also add an entry to the registry key:

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionHotfix

DO NOT alter this entry in any fashion. These keys list what Hotfixes have been applied. (Programmes like Systems Internals 'PSInfo' use this information)

For more information on how a patch is applied using Hotfix.exe and Update.exe see the following Microsoft Knowledgebase articles:

Windows Nt 4.0 Sp6 Iso

184305 - How to Install and Remove Hotfixes with HOTFIX.EXE
262841 - Command-Line Switches for Windows Software Update Packages
824687 - Command-Line Switches for Microsoft Software Update Packages

Acknowledgements:

Thanks to Bear Windows, Petros Zimourtopoulos, Taed Wynnell and Roderick Thompson for additions and corrections on this page.

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All promotional photographs and advertising material, corporate names and logos, product names, trade names, trademarks and registered trademarks are the property of their respective owners, and are acknowledged as such.

This list is maintained by ZCM Services, Australia. Whilst every care is taken in the preparation of this information, I accept no responsibility for errors or omissions. Use the information presented on this site AT YOUR OWN RISK.

Last Update April 7, 2010 at 9:13 PMAEST.

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