**********************************************************************
Microsoft Windows NT 4.0 Workstation
and Windows NT 4.0 Server
Service Pack 5
**********************************************************************
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for informational purposes only. The entire risk of the use or results
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======================================================================
HOW TO USE THIS DOCUMENT
======================================================================
This document provides information about Microsoft Windows NT 4.0
Workstation and Windows NT 4.0 Server Service Pack 5 (SP5), as well as
answers to questions that you might have.

To view Readme.txt in Notepad, maximize the Notepad window. For best
viewing, click Edit, and then click Word Wrap.

To print Readme.txt, open it in Notepad or another word processor,
click the File menu, and then click Print. For best printing results,
click Edit, click Set Font, type 9 in the Size box, and then click OK.

For a current list of computer and hardware peripherals supported by
Windows NT 4.0, see the Windows NT Hardware Compatibility List
at http://www.microsoft.com/hwtest/hcl/.


======================================================================
CONTENTS
======================================================================
1.0 INTRODUCTION
1.1 What Is Service Pack 5?
1.2 List of Fixes in Service Pack 5
1.3 Downloading and Extracting the Service Pack

2.0 INSTALLATION INSTRUCTIONS FOR WINDOWS NT 4.0 SERVICE PACK 5
2.1 Before You Install the Service Pack
2.2 Service Pack Install Order Documentation
2.3 Installing the Service Pack
2.4 Service Pack Uninstall

3.0 USER NOTES
3.1 Emergency Repair Disk
3.2 Adding New Components
3.3 Installing Symbol Files from the CD
3.4 Hardware Compatibility with Windows NT 4.0
3.5 Compaq Alpha Notes
3.6 Running Windows NT 4.0 Administrative Tools from a Remote
Server
3.7 CryptoAPI and Authenticode
3.8 Uninstalling Internet Explorer
3.9 Certificate Server Notes
3.10 Internet Information Server 4.0, Secure Sockets Layer and
Root Certifying Authority Certificates, and the
IISCA.EXE Tool
3.11 Message Queue Notes
3.12 COM Internet Services
3.13 Event Log Service
3.14 Upgrading a Cluster to Service Pack 5
3.15 Year 2000 Updates
3.16 Uninstalling IE 4.01 SP2 if using MSSCE
3.17 Find Files or Folders by Date using Dates Prior to 1980

4.0 ADDITIONAL FIXES AND WORKAROUNDS
4.1 Installing Windows NT 4.0 on a Windows 2000 Computer
4.2 Dual Booting Between Versions of Windows NT 4.0 and
Windows 2000
4.3 NTFS for Windows NT 4.0 and NTFS for Windows 2000 Support
4.4 Installing SP5 on a Windows NT 4.0 Server Enterprise Edition
System
4.5 Internet Information Server 4.0
4.6 Security Configuration Manager
4.7 Updating Audio Drivers
4.8 Microsoft Proxy Server
4.9 Ositech Jack of Spades
4.10 MDAC 2.0 Service Pack 1
4.11 Installing Internet Explorer 4 SP2 as a Non-Default Browser

5.0 APPLICATION NOTES
5.1 CheckIt Diagnostic Kit 4.0 by Touchstone
5.2 Norton CrashGuard 2.0 for Windows NT
5.3 Inoculan 4.0
5.4 Exceed
5.5 Terminal Server
5.6 Microsoft NetMeeting Security and Year 2000 Issues
5.7 NuMega SoftICE
5.8 Microsoft BackOffice Small Business Server
5.9 Rational Visual Quantify Version 4
5.10 Microsoft IntelliPoint
5.11 Systems Management Server 2.0

6.0 IF YOU DO NOT HAVE SERVICE PACK 4
6.1 New in Service Pack 4
6.2 List of Fixes in Windows NT 4.0 Service Packs 1 through 4


======================================================================
1.0 INTRODUCTION
======================================================================
This release of Microsoft Windows NT 4.0 Service Pack 5 (SP5) is easy
to apply while Windows NT is running. SP5 updates all files that are
older than those included in this Windows NT Service Pack. Service
Pack releases are cumulative, containing all previous Service Pack
fixes and any new fixes created after Service Pack 4.

IMPORTANT: It's recommended that you stop running any critical
services before you apply Windows NT 4.0 SP5. For more preinstallation
recommendations, see Section 2.1, "Before You Install the
Service Pack."

IMPORTANT: SP5 contains only 40-bit encryption. This release isn't
supported for installation on an existing North American 128-bit
installation of Windows NT 4.0. If you install SP5 on a computer with
128-bit encryption, system services might fail to start.

If you are on a North American computer, you may have 128-bit encryption
installed.

>>>To determine if 128-bit encryption is installed
1. Open My Computer, click View, and then click Options.
2. Click the View tab, select Show All Files, and click OK.
3. Click Start, point to Find, and then click Find Files or Folders.
4. Search for files named "Rsaenh.dll" on your local hard drives.
5. If the file exists in the System folder in your Windows NT folder,
then you have 128-bit encryption support installed. If the file does not
exist, you have 40-bit encryption.

Installing the 40-bit version of SP5 on a previously existing 128-bit
computer will not downgrade all of the encryption in the operating
computer, so it will not necessarily change the exportability of the
computer.

----------------------------
1.1 What Is Service Pack 5?
----------------------------
SP5 is a collection of current updates and enhancements to Windows NT
Server 4.0 and Windows NT Workstation 4.0 since their releases.

SP5 is not a required upgrade. If you have deployed or are in the
process of deploying a previous Service Pack, you probably need not
change your plans. To accommodate customers in this situation,
Microsoft provides software updates for critical issues to previous
Service Packs. For example, you can continue to obtain Year 2000 (Y2K)
software updates if you're using SP4.

SP5 content is focused on:

* Demonstrated customer impact
SP5 rolls up many of the recent updates to Windows NT 4.0. In
addition, SP5 has undergone extensive regression testing.

The following is a list of the most frequently requested
Windows NT 4.0 updates that are included in SP5:
- DHCP Server of SP4 Ignores Reservations
- SP4 forces cluster servers to be taken off and online
- Windows NT 4.0 SP4 Does Not Update MTS Files
- Duplicate SCSI Logical Unit (LUN) 0 When LargeLUNs Registry
Key Enabled
- Under stress, a computer running Windows NT Server or
Workstation may display a STOP 0x0000001E error message on a
blue screen.
- Cannot configure ODBC logging when using Microsoft Data Access
Components (MDAC) 2.0 SP1, SP4, and Proxy Server 2.0.
- Secondary WINS query delayed by 1500ms even when primary WINS
returns 'na
- Using SP4, RCP "host:foo ." fails whereas RCP "host:foo foo"
- SP4 systems access the hard disks every five minutes, which
interferes with Power Management.

* Y2K fixes
SP5 provides the latest fixes to known Year 2000 issues in
Windows NT 4.0. For more information on SP5 and Year 2000 issues,
see Section 3.15, "Year 2000 Fixes." For the latest information
on Year 2000 and Windows NT 4.0, see the Microsoft Year 2000
Readiness Disclosure & Resource Center Web site at
http://www.microsoft.com/year2000/ or call 1-888-MSFT-Y2K.

* Updates to SP4 issues, including:
- Reduced heap fragmentation issues which would lead to memory
problems.
- Eliminated memory fragmentation problem with Critical Sections.
- Eliminated a system hang that could occur on multiprocessor
systems with multiple memory maps.
- Resolved SP4 issues with Oracle Fail Safe software for
Windows NT Clusters.
- Eliminated hanging issues
when SetSecurityInfo and SetNamedSecurityInfo calls were made
during DLLInit time.
- Enabled Desktop folders in Explorer windows to retain settings.
- Eliminated issues where LPD would stop the printing of multiple
copies.
- Prevented DNS from converting host names to lowercase.
- Prevented GetHostbyName from returning unbound IP RAS
addresses.
- Eliminated issues where Apple Macintosh Clients can't see
Windows NT 4.0 Server after upgrading to SP4.
- Eliminated issues where changing an SFM password allows
Windows NT client computer to share access with null password.

* Euro issues
SP5 includes the existing updates for Windows NT 4.0 euro
support. For the most recent information about Windows NT 4.0 and
euro, see the Microsoft Euro Web site at
http://www.microsoft.com/euro/.

* Security updates
SP5 contains current updates for known Windows NT 4.0 security
issues. For the most recent information about Windows NT
security, see the Microsoft Security Advisor Web site at
http://www.microsoft.com/security/.

------------------------------------
1.2 List of Fixes in Service Pack 5
------------------------------------
To assist customers who are deciding whether to upgrade to SP5,
Microsoft provides extensive documentation of the fixes and updates
contained in SP5. This documentation gives customers the opportunity
to analyze whether the SP5 contents justify the necessary test and
deployment resources. This list of affected Service Pack files is
available at
http://support.microsoft.com/support/kb/articles/Q225/0/37.asp.

------------------------------------------------
1.3 Downloading and Extracting the Service Pack
------------------------------------------------
If you have downloaded this Service Pack from an FTP site or a Web
site, you should read the release notes completely before you extract
and install the Service Pack. For this release, these self-extracting
program files are also located at the root of the CD. They are
SP5alpha.exe for Alpha processor type computers and SP5i386 for Intel-
processor type computers.

After downloading the Service Pack, you'll have a compressed
program file on your hard drive. To extract this file and begin
the installation process, for example, type SP5i386.exe at the
command prompt, or double-click the file in Windows NT Explorer.
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 SP5i386 /x.)


======================================================================
2.0 INSTALLATION INSTRUCTIONS FOR WINDOWS NT 4.0 SERVICE PACK 5
======================================================================
Carefully read the installation instructions before you install
Service Pack 5, since they may have changed from previous
Service Packs.

----------------------------------------
2.1 Before You Install the Service Pack
----------------------------------------
Close all active debugging sessions before installing this Service
Pack, otherwise, the Update program is unable to replace system
files that are in use. If a file is in use when you install SP5, a
dialog box appears prompting you to cancel the installation or skip
the file copy. It's recommended you cancel the installation and then
uninstall SP5. To do this, run Spuninst.exe, or click Start, point
to Settings, click Control Panel, double-click Add/Remove Programs,
and then click Uninstall Service Pack 5. Close all active sessions
on the computer, and then run Update.exe again to install the
Service Pack.

Also, to maximize recovery of the computer in the event of
installation failure, it's recommended that you do the following
before installing SP5:

1. Update the system Emergency Repair Disk by using the Rdisk.exe
command with the /s switch.
2. Perform a full backup of the computer, including the registry
files.
3. Disable any nonessential third-party drivers and services (that
is, drivers and services that aren't required to boot the
computer).
4. Contact the original equipment manufacturer (OEM) that provided
the driver or service for the updated versions of the file(s).

2.1.1 NEC Versa 6050 or 6200 Series Notebook Computers
------------------------------------------------------
Users of NEC Versa 6050 or 6200 Series notebook computers, with
Windows NT version 4.0 preinstalled, should select "Yes" when SP5
Update.exe prompts you to replace the Hal.dll file.

2.1.2 SystemSoft Card Wizard
----------------------------
If your computer contains SystemSoft Card Wizard version 2.x or
earlier, you must obtain SystemSoft Card Wizard version 3.00.01 or
greater before installing Windows NT 4.0 Service Pack 5. Otherwise,
your operating system may no longer function. For further details, see
the SystemSoft Web site at http://www.systemsoft.com/.

2.1.3 Advanced Power Management
-------------------------------
Advanced Power Management isn't supported by Windows NT 4.0. As a
result, it's recommended that you remove Advanced Power Management
features before installing SP5.

2.1.4 Power Management Utilities
--------------------------------
Power Management Utilities may not work on Windows NT 4.0 SP5. Contact
the vendor of your Power Management Utilities for an updated version
to work with Windows NT 4.0 SP5.

--------------------------------------------
2.2 Service Pack Install Order Documentation
--------------------------------------------
IMPORTANT: If you are installing Service Packs for multiple Microsoft
products, the order in which you install the Service Packs may have an
effect on stability. You can view the documentation about the
recommended installation order at
http://www.microsoft.com/windows/servicepacks/.

--------------------------------
2.3 Installing the Service Pack
--------------------------------
>>>To install the Service Pack from the CD
1. Insert the Service Pack CD into your CD-ROM drive.
2. If a Web page opens in your browser after you insert the CD,
click Windows NT Service Pack, and then click
Install Service Pack.
3. When you're prompted to open the file Spsetup.bat or save it
to disk, click Open, and then follow the instructions that
appear.

Note: To use the uninstall feature of SP5, you must create an
Uninstall folder during the initial installation.

4. If a Web page doesn't automatically open when you insert the CD,
open the command prompt window, and change the folder to the
drive letter associated with the CD-ROM drive.
5. Change the folder to \I386\Update or \Alpha\Update (depending
upon whether you have an x86 or Alpha CPU), and type UPDATE.
6. Follow the instructions that appear.

If SP5 doesn't install from the CD after you click Install Service
Pack 5 or your browser doesn't automatically display installation
instructions when you insert the CD into your CD-ROM drive, start the
SP5 installation process manually from the CD. For more information,
see "To Install the Service Pack from the CD" earlier in this section.

>>>To install SP5 from a network drive
1. Run the command to connect to the network drive that has the SP5
files.
2. Change the drive letter to that of the network drive.
3. Change the folder to \I386\Update or \Alpha\Update (depending
upon whether you have an x86 or Alpha CPU), and then
type UPDATE.
4. Follow the instructions that appear.

Note: It's recommended that you allow Setup to create an Uninstall
folder the first time you install SP5.

>>>To install SP5 from the Internet
Use a Web browser (such as Internet Explorer 3.02 or later) to visit
http://microsoft.com/windows/servicepacks/. Click the Install
Service Pack 5 option to install SP5 on your computer. This Web page
automatically detects which files need to be updated and then copies
the appropriate files to a temporary folder on your computer. It then
installs only those files that are needed to update your computer.

Note: If you use Web browsers other than Internet Explorer 3.02 or
later, you may be unable to install SP5 by using this update method.
You can still install SP5 by downloading the entire Service Pack from
the Internet onto your computer and running Update.exe locally.

You can use installation switches with Update.exe. The following
syntax help is available by typing update /?:
UPDATE [-u] [-f] [-n] [-o] [-z] [-q]
-u Unattended mode
-f Force other programs to close at shutdown
-n Do not back up files for uninstall
-o Overwrite OEM files without prompting
-z Do not reboot when installation is complete
-q Quiet mode - no user interaction

---------------------------
2.4 Service Pack Uninstall
---------------------------
This Service Pack contains an uninstall feature that you can use to
restore your computer to its previous state.

To enable the uninstall option, run Update.exe. A subfolder in your
Windows NT folder named Uninstall is created. This requires at
least 120 megabytes (MB) of free space on the drive on which
Windows NT is installed, 60 MB for the uninstall folder, and 60 MB
for the Service Pack-updated system files.

To uninstall SP5, in Control Panel, double-click the Add/Remove
Programs. Select Windows NT 4.0 Service Pack 5, and click Add/Remove.
If this option isn't available, run Spuninst.exe from the
\%systemroot%\$NtServicePackUninstall$\spuninst\ folder.

Note: If you install any programs or services that require SP5 or have
fixes contained in SP5, uninstalling SP5 could adversely affect those
programs.

To uninstall SP5, the drive letter for the boot drive must be the same
one used when you installed SP5. If you change the drive letter for
the boot drive, you can't uninstall SP5.

To uninstall Service Pack 2 (SP2) and Service Pack 3 (SP3), you had to
run Update.exe and then select "Uninstall a previously installed
Service Pack." These commands returned your computer to its previous
state. After your computer restarted, the Update.exe program replaced
the files updated by the Service Pack with most of the files from the
previous installation and returned most of your registry settings to
what they were before that Service Pack was installed.

Note: If you uninstall SP5 on a computer that previously had SP3
(without Internet Explorer 4.0) installed on it, cryptography won't
work correctly after the uninstall completes. To work around this
issue, reinstall SP3 after you have uninstalled SP5.

Uninstalling SP5 won't uninstall new versions of CryptoAPI
and SChannel.

IMPORTANT: If you plan to install a previous Service Pack after
uninstalling SP5, take note of the following important precaution. SP5
modifies the Security Account Manager (SAM) database and the Security
database so that older versions of the Samsrv.dll, Samlib.dll,
Lsasrv.dll, Services.exe, Msv1_0.dll, and Winlogon.exe files no longer
recognize the database structure. Therefore, the uninstall process
doesn't restore these files when uninstalling SP5. If you install a
prior Service Pack (for example, SP3) after uninstalling SP5, click
"No" on the "Confirm File Replace" dialog boxes that prompt you to
overwrite Samsrv.dll and Winlogon.exe. If you overwrite the newer
files with these older versions, you'll be unable to log on to
the computer.

Note: If you're reinstalling SP5 after installing new software or
hardware, you must choose to create a new Uninstall folder. To retain
your ability to return to a bootable configuration, copy the current
Uninstall folder to a safe location before running the SP5
installation program.


======================================================================
3.0 USER NOTES
======================================================================
This section covers information that is specific to Service Pack 5.

--------------------------
3.1 Emergency Repair Disk
--------------------------
If you use the Windows NT Emergency Repair Disk to repair your Windows
NT 4.0 computer, Windows NT requires you to supply the original
Windows NT 4.0 media at some time after you install SP5. This means
you'll need to reinstall SP5 after the repair is completed because the
Emergency Repair Disk repairs your computer by restoring your original
Windows NT 4.0 system files. After the repair is complete, follow the
Installation Instructions (see Section 2.0) to reinstall SP5. For more
information on using the Windows NT Emergency Repair Disk utility, go
to the Microsoft Knowledge Base at
http://support.microsoft.com/support/ and search for
KB article Q146887.

Note: To use the Emergency Repair Disk utility, you must have the
updated version of Setupdd.sys which comes with SP5. To update your
version of Setupdd.sys, copy Setupdd.sys from the Service Pack to
your Windows NT 4.0 Setup Disk 2 from the original product media.
This replaces the older version of Setupdd.sys with the updated
version. For more information, go to the Knowledge Base at
http://support.microsoft.com/support/ and search for
KB article Q158423.

--------------------------
3.2 Adding New Components
--------------------------
If you change or add new software or hardware components to your
computer after you install SP5, you'll need to install SP5 again. This
is because the files included on the original Windows NT 4.0 media may
not be the same as the files on the Service Pack CD. You can't install
new components, such as a new keyboard or printer driver, directly
from the Service Pack media. You must install new components from the
original product media and then reinstall the Service Pack.

For example, if you install the Simple Network Management Protocol
(SNMP) service after installing SP5, you'll need to reinstall the
Service Pack. Otherwise, you'll receive the message "Entrypoint
SnmpSvcGetEnterpriseOID could not be located in Snmpapi.dll." This
informs you that some of the files in the SNMP service have been
updated in SP5 and that you have a version mismatch. Reinstalling SP5
fixes the problem by copying the newer versions of the files onto
your computer.

Note: Simple Network Management Protocol (SNMP) security provides the
ability to set a permission level on the SNMP agent computer. The
permission level determines how the SNMP agent computer processes
requests from an SNMP community.

----------------------------------------
3.3 Installing Symbol Files from the CD
----------------------------------------
Each program file in Windows NT 4.0 has a corresponding symbol file
that is helpful in diagnosing application and computer crashes. Symbol
files are used in conjunction with a debugger and are not required
proper operation of your computer.

The symbols for SP5 files are compressed in self-extracting program
files named Sp5symi.exe for Intel and Sp5syma.exe for Alpha0-based
computers. To install the symbol files corresponding to the new
binaries in SP5, run the executable file, and, when prompted, specify
the path to the location of the previous version's symbols (for
example, C:\Winnt\Symbols\). This command copies the SP5 .dbg files
over the existing versions of these files.

For more information about debugging in Windows NT, see Chapter 39,
"Windows NT Debugger," in the Microsoft Windows NT 4.0 Workstation
Resource Kit.

-----------------------------------------------
3.4 Hardware Compatibility with Windows NT 4.0
-----------------------------------------------
3.4.1 Video Drivers
-------------------
Due to incompatibilities between the ATIRage drivers and Service Pack
setup, the files Ati.sys and Ati.dll are not included with SP5. Any
ATI drivers currently installed on your computer still function
normally.

If you install SP5 over a previous Service Pack on a computer that has
a Number Nine Visual Technologies Imagine 2 video card and drivers
installed, you may experience some loss of functionality in the video
driver, such as loss of any resolutions requiring 256 or more colors.
If you uninstall SP5 and revert to SP3, the Imagine 2 card may be
unable to display 256 colors or higher. There is no known resolution
for either of these two issues because reinstalling the Imagine 2
video drivers doesn’t restore the lost functionality. Number Nine is
aware of this issue and is working on a fix.

3.4.2 Dell Latitude Computers
-----------------------------
If you're running Windows NT 4.0 on a Dell Latitude portable computer,
your Dell-supplied Softex Advanced Power Management and PC Card
Controller services (versions 2.0 and later) continue to function
after you install SP5. Softex version 1.0 stops functioning after
SP5 installation. To update your computer for SP5, install
version 2.19 or later of the Softex utilities. Your computer becomes
unusable if you reinstall any version of Softex prior to 2.19 after
installing SP5.To download this utility, visit the Dell Web site at
http://support.dell.com/filelib/.

3.4.3 Softex/Phoenix Utilities
------------------------------
If you're using any of the following Softex Incorporated or Phoenix
Technologies utilities, you may encounter problems running SP5:
* Softex PC Card Controller or Phoenix CardExecutive for Windows NT
* Softex Power Management Controller or Phoenix APM for Windows NT
* Softex Docking Controller or Phoenix NoteDock for Windows NT
* Softex DeskPower Controller or Phoenix DeskAPM for Windows NT

Follow these guidelines with Softex/Phoenix utilities:
1. Obtain the version number of the utilities you're using.
2. You must be running version 2.19 or later of the Softex or
Phoenix utilities to avoid problems with SP5. Don’t install or
reinstall any version of Softex or Phoenix utilities earlier
than version 2.19 on your computer, or your computer might not
start. For more information, see the Softex Incorporated Web
site at http://www.softexinc.com/ or the Phoenix Technologies
Web site at http://www.phoenix.com/.

3.4.4 Support for 255 SCSI Logical Unit
---------------------------------------
Windows NT 4.0 detects only the first eight logical units on a SCSI
device. To work around this limitation, install SP5 and add the
following key in the registry:

\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
\[Driver Service Key]\Parameters\Device[N]
LargeLuns: REG_DWORD: 0x1

where [Driver Service Key] is your SCSI driver name and [N] is the
SCSI bus number.

3.4.5 SystemSoft Card Wizard
----------------------------
If your computer contains SystemSoft Card Wizard version 3.x and you
have installed SP5, you may have lost socket services functionality.
To work around this issue, reinstall SystemSoft Card Wizard version
3.x or higher after installing Service Pack 5. Or you can copy
Pcmcia.sys from the Service Pack 5 Uninstall folder,
$ntservicepacekuninstall$, to the \%systemroot%\System32\Drivers
folder on your computer. Reboot the computer.

-----------------------
3.5 Compaq Alpha Notes
-----------------------
3.5.1 Using Remotely Possible 32 with Matrox Millennium Display
Adapter
---------------------------------------------------------------
If you use Remotely Possible 32 on an Alpha-based computer with a
Matrox Millennium display adapter, don't use the Matrox drivers.
Otherwise, your computer won't reboot properly. You must use
VGA-compatible display adapter drivers to use Remotely Possible 32.

3.5.2 Lotus Notes 4.5
---------------------
If you want to use Lotus Notes and Internet Explorer 4.01 on an Alpha-
based computer that runs Windows NT 4.0, you must follow this sequence
when installing SP5:
1. If you have Internet Explorer 4.01 on your computer,
uninstall it.
2. Install SP5.
3. Install (or reinstall) Lotus Notes.
4. Install Internet Explorer 4.01 SP2 from the SP5 CD.
This problem will be fixed in a future release.

3.5.3 Alpha-based Fixes and Enhancements
----------------------------------------
The following sections describe fixes and enhancements to Alpha-based
computers since Windows NT 4.0 SP3. Many of these fixes and
enhancements are in the Hardware Abstraction Layer (HAL). SP5 ships
with the latest version of HAL (revision E). This version is also
available from Compaq as HAL V4.0 OEM revision E.

IMPORTANT: If your computer has a Compaq KZPSA SCSI controller,
revision E of HAL requires that you upgrade your DECKZPSX disk driver
to V1.51 or later. Installing SP5 automatically installs the correct
driver.

3.5.3.1 Computer Hangs on Alpha Systems with Only One Processor
Physically Present
The following Alpha-based computers with only one processor physically
present no longer hang when booted:
AlphaServer 4x00
AlphaServer 1200
AlphaStation 1200
Compaq Server 5000
Compaq Server 7000

3.5.3.2 Clock Interrupt Period Changed from 7.5 microseconds to 10
microseconds
In Windows NT 4.0 SP5, the effective clock interrupt period on the


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