Windows NT 4.0 Readme.wri File (Part 2 of 5) (142640)

This article was previously published under Q142640

This article contains a copy of the information in the Readme.wri file included in Windows NT version 4.0. Setup copies this file to the System32 folder.

For phone numbers and support options on all Microsoft products, please see the information available on the Microsoft Web site at http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS.

Windows NT Server Version 4.0

The information in this section pertains only to Windows NT Server.

Microsoft FrontPage (TM)

In addition to all the features of Windows NT Workstation, Windows NT Server also includes Microsoft FrontPage. Microsoft FrontPage provides a way to develop and maintain Web sites. Install FrontPage from the Windows NT Server compact disc. The Setup program is located in the \Frontpg\Frontpg folder.

FrontPage support

Microsoft Microsoft Technical Support

In the event you cannot install or have a technical question about Microsoft FrontPage, please refer to the support offerings below. Microsoft's support offerings range from no-cost and low-cost online information services (available 24 hours a day, 7 days a week) to annual support plans. You can also check the Technical Support section in online Help for additional information. Microsoft support services are subject to Microsoft's then-current prices, terms, and conditions, which are subject to change without notice.

Information Services

Microsoft Technical Support Information Services provides you with easy access to the latest technical and support information for Microsoft products. You can access a variety of low and no cost Information Services 24 hours a day, 365 days a year. Many of the Microsoft Technical Support Information Services make reference to the following technical content:

• Microsoft Frequently Asked Questions (FAQ): Here you will find quick answers to the most common technical issues on using your favorite Microsoft product.
• Microsoft Download Center: The Microsoft Download Center contains hundreds of free software add-ons, bug fixes, peripheral drivers, software updates, and programming aids for easy downloading at your convenience.
• Microsoft Knowledge Base: The Microsoft Knowledge Base is the same database that Microsoft support engineers use to answer technical questions. It is a comprehensive collection of more than 70,000 detailed articles with technical information about Microsoft products, bug and fix lists, and answers to commonly asked technical questions.

Internet services (World Wide Web and FTP sites):

Access the Microsoft FAQ, Microsoft Download Center, and Microsoft Knowledge Base on our Internet sites. Additional information, such as resource kits, white papers, and the latest information about Microsoft products is also readily available. It's easy to search through these technical sources to find what you need. If you're an Internet user, you can access this no-charge information (connect charges may apply) at the following locations:

• The World Wide Web site is located at http://www.microsoft.com
• The FTP site is located at ftp.microsoft.com

The Microsoft Network (MSN) and other online services:

You can access the Microsoft Knowledge Base and the Microsoft Download Center through MSN and other online services. Additional technical information and community services, such as the Microsoft Frequently Asked Questions, Member-to-Member Bulletin Board Services and links to the World Wide Web, are available on MSN. To access Microsoft support services on MSN, choose Go To Other Location on the Edit menu and type MSSUPPORT.

Microsoft TechNet:

Microsoft TechNet is the front-line resource for fast complete answers to technical questions on Microsoft desktop and systems products. From crucial data on client/server and workgroup computing, systems platforms, and database products, to the latest on support for Microsoft Windows and Macintosh(r)-based applications, it's all on Microsoft TechNet. Microsoft TechNet is $299 annually for a single user license, or $699 annually for a single-server, unlimited-users license. To subscribe to Microsoft TechNet, call (800) 344-2121.

Microsoft Developer Network Library (MSDN):

The Microsoft Developer Network Library is the comprehensive source of programming information and toolkits for those who write applications for the Microsoft Windows, Windows 95, and Windows NT operating systems, or use Microsoft products for development purposes. Members with an MSDN annual subscription are kept up-to-date through regular deliveries of information, a newsletter, and other information sources. To subscribe to the Microsoft Developer Network, call (800) 759-5474.

Per-Incident Electronic Service Requests:

This service is available to Premier, Priority Comprehensive 35 and 75, and Priority Developer 35 customers. You can directly submit electronic service requests to Microsoft support engineers who receive the requests and work with you to resolve your technical problem. This capability also allows you to access Microsoft support information to maintain and troubleshoot your Microsoft products independently.

Standard Support

In the United States, unlimited no-charge support from Microsoft support engineers is available on FrontPage usability issues such as Setup, FrontPage usage, and troubleshooting error messages via a toll call between 6:00 A.M. and 6:00 P.M. Pacific time, Monday through Friday, excluding holidays. Questions involving HTML code, 3rd party server extensions, or other development-related issues will receive up to two no-charge incidents for the current version. In the United States call (425) 635-7088. When you call, you should be at your computer and have the appropriate product documentation at hand. Be prepared to give the following information:

• The version number of the Microsoft product that you are using.
• The type of hardware that you are using, including network hardware, if applicable
• The exact wording of any messages that appeared on your screen
• A description of what happened and what you were doing at the time
• A description of how you tried to solve the problem

Priority Support

Microsoft Microsoft Technical Support offers priority telephone access to Microsoft support engineers 24 hours a day, 7 days a week, excluding holidays, in the U.S. In the United States, call (900) 555-2020; $55 (U.S.) per incident. Charges appear on your telephone bill. Text Telephone

Microsoft text telephone (TT/TDD) services are available for the hard of hearing. In the United States, using a TT/TDD modem, dial (425) 635-4948. In Canada, using a TT/TDD modem, dial (905) 568-9641.

Product Support Worldwide

For information on Microsoft subsidiary offices and the countries they serve, refer to the Technical Support section in online Help or the Microsoft World Wide Web site at http://www.microsoft.com. If there is no Microsoft office in your country, please contact the establishment from which you purchased your Microsoft product.

Microsoft Internet Information Server

Installing Internet Information Server on Windows NT Version 4.0

Internet Information Server (IIS) version 2.0 Setup is fully integrated into Windows NT Server version 4.0 Setup, so you can set up your Internet services while installing Windows NT Server. To install IIS, run Windows NT Server Setup and follow the on-screen instructions. If you have already installed Windows NT Server version 4.0, you can install IIS version 2.0 separately by clicking the Install Internet Information Server icon on your Windows NT desktop. You can also double-click the Network icon in Control Panel, and then click the Services tab to add Internet Information Server.

For more information about installation, see the "Start Here" book provided with Windows NT Server version 4.0.

Where Is the Product Documentation?

Documentation for Microsoft Internet Information Server is installed with the product and is available online. After installing Internet Information Server, you can open its Installation And Administration Guide by clicking the Product Documentation icon in the Microsoft Internet Server program group, or by running Internet Service Manager and choosing Topics on the Help menu. You can also review the product documentation before you install Internet Information Server by using a Web browser (such as Microsoft Internet Explorer) to open the files directly from the Windows NT Server compact disc.

To read the documentation, open the following file on the compact disc: where <platform> is Alpha, I386, Mips, or PPC.

You can print chapters by using your Web browser's Print command. You will obtain the best printing results by using your browser's default font size for text; for example, Medium in Internet Explorer and 12 points in Netscape Navigator.

Information about Internet Information Server is included in the printed book "Start Here", which is provided with Windows NT Server version 4.0.

Upgrading IIS 1.0 to IIS 2.0

IIS 2.0 includes a new Web-based administration tool, Internet Service Manager (HTML), that enables you to administer your server from any Web browser. By default, this tool is not installed when you upgrade from IIS 1.0 to IIS 2.0.

To install the Web-based Internet Service Manager, double-click the Internet Information Server Setup icon on the desktop and follow the setup screen instructions. When it appears, click Add/Remove, then select Internet Service Manager (HTML). Follow the setup screen instructions to complete the installation.

If you have any HTML pages in your Home virtual directory, the IIS setup program will not install any of the new 2.0 sample pages. The sample pages now include links to the HTML documentation and to the Web-based Internet Service Manager. To install the samples, move your current content files into a temporary directory before installing IIS 2.0.

Anonymous User Account

If users cannot use the Anonymous user logon to connect to IIS servers, set the anonymous user account (the account is named IUSR_<computer name>) password on the IIS server to a publicly known value (for example, password) in both User Manager for Domains and Internet Service Manager.

Removing TCP/IP

If you remove the TCP/IP protocol, the Internet Information Server component cannot be removed using the Internet Information Services icon. To work around the problem and remove IIS, reinstall the TCP/IP protocol, and then remove IIS.

Support for Private Communication Technology (PCT)

Internet Information Server supports the PCT 2.0 specification, which is designed to secure general-purpose business and personal communications on the Internet and includes features such as privacy, authentication, and mutual identification. PCT enhances Secure Sockets Layer (SSL) with technology developed for Secure Transaction Technology (STT), particularly in authentication and protocol efficiency. By separating authentication from encryption, PCT enables applications to use authentication that is significantly stronger than the 40-bit key limit for encryption allowed by the U.S. government for export. Microsoft's implementation of PCT is backward compatible with SSL.

Changes to User Configuration

If changes to user configurations (such as adding or removing users from a group, changing passwords, or changing NTFS permissions) do not take affect immediately, try stopping and restarting the Internet services (WWW, FTP, and gopher). Internet Information Server caches security tokens for all users. Changes to user configurations will not appear until the security- token cache is cleared and the new tokens are cached. The default caching interval is 15 minutes.

Default File-Extension Mappings

Previous releases of Internet Information Server installed a default file- extension mapping to map .bat and .cmd files to the command interpreter Cmd.exe. If you are upgrading Internet Information Server, the Setup program removes the previously-installed .bat and .cmd mapping. If you are installing Internet Information Server for the first time, Setup simply does not create this default mapping.

You can map .cmd or .bat files to the Cmd.exe program by creating a registry entry. Use file-extension mappings carefully. Mapping batch command files to an interpreter may pose a security threat to your server.

For information on creating the registry entry, see "Associating Interpreters with Applications" in Chapter 10, "Configuring Registry Entries," in the Internet Information Server Installation And Administration Guide.

Product Home Page

The HTML samples include a product home page (Default.htm) for Internet Information Server that contains links to the product documentation, the Web-based server administration tool, and to the Microsoft Web site. If you already have a file named default.htm in the Wwwroot directory, Setup will not replace your file with the product's default home page. You can view the product home page by typing the following URL: If you do not have a file named Default.htm in the Wwwroot directory, Setup copies the file to the Wwwroot directory.

Publishing from Network Drives

The FTP, gopher, and WWW services cannot publish from redirected network drives (that is, from drive letters assigned to network shared folders).

To use network drives, you must use the server and share name (for example, \\<computername>\<Sharename>\Wwwfiles). If you require a user name and password to connect to a network drive, all requests from remote users to access that drive must be made with the user name and password you specified, not the anonymous IUSR_<computername> account or another account you may have specified.

Choosing a Logon Method

This release of Internet Information Server provides three logon methods for the WWW, FTP, and gopher services.

• "Local" means that the user is logged on as though he or she had actually walked up to the computer and logged on interactively. The user must have the Log on locally access right set in User Manager.
• "Batch" means the user is logged on locally (as with the Local logon method) but must have the Log on as a batch job access right set in User Manager. This logon method enables the user to access the server from a Web browser but does not give the user the right to log on locally.
• "Network" means the user is logged on as a remote network user. The user must have the Access this computer from network access right set in User Manager. This logon method enables the user to access the server from a Web browser but does not give the user the right to log on locally. Users logged on with this logon method cannot access remote, authenticated resources, such as a SQL server using integrated security.

Generally, you should configure the default logon method for FTP and gopher users as Network. You should configure the default logon for WWW service users as Network unless users need to access remote, authenticated resources.

For backward compatibility with Internet Information Server 1.0, the default logon method is Local. To change the logon method, set the registry entry LogonMethod as described in Chapter 10, "Configuring Registry Entries," in Internet Information Server Installation And Administration Guide.

For the WWW service, if the user's browser supports Basic authentication, the user is logged on using the logon method set in the LogonMethod registry entry. If the user's browser supports Windows NT Challenge/Response authentication, the user is always logged on using the Network logon method.

Note that Basic authentication sends user names and passwords over the network in clear text (unencrypted text). Challenge/Response authentication is more secure because it sends passwords in encrypted text. Currently, only Internet Explorer 2.0 or later supports Windows NT Challenge/Response authentication. For more information on security, see Chapter 5, "Securing Your Site Against Intruders," in Internet Information Server Installation And Administration Guide.

Setting the Log File Size

You cannot set the maximum size of the logging file by using the Web-based version of Internet Service Manager. You must use Internet Service Manager to set this option, which is located in the Logging Properties panel.

Securely Generating SSL Key Pairs

The Key Manager tool (Keyring.exe), new with Internet Information Server 2.0, can generate a Secure Sockets Layer (SSL) public-private key pair on a local computer as well as for a remote computer. With this tool, you can create a key pair on one computer and move it to a remote computer.

However, transferring a key pair from one computer to another over a network may expose it to snooping, because the key pairs are not encrypted when traveling over a network. If a private key is discovered, it can compromise the site's SSL identification (as stated in the Certificate). Furthermore, this potentially exposes all subsequent SSL communications to and from that computer are subject to interception and decryption.

To protect the private key, which is paramount to SSL security, you should generate a key pair remotely in one of these three ways:

• In a secure environment over a trusted network.
• Locally, on the actual computer where it is to be installed.
• On a remote computer and then moved to a floppy disk, hand-carried to the target computer, and manually installed.

Any of these three methods will ensure security.

Opening Certificates Using Key Manager - Standard File Extensions

If you use non-standard file extensions (such as .cert) when saving certificates, Key Manager will display a message indicating that the filename is invalid when you open the certificate. To work around this problem, point to the filename in the File Open dialog box and then click the filename. Or use a standard file extension, such as .txt, when saving the certificate.

FAQ and Mailing List for IIS Developers

Stephen Genusa's IIS FAQ answers questions about Internet Information Server and is a good source of additional information about developing applications for IIS. To read the FAQ, visit: There are many mailing lists and newsgroups that cover the broad range of Microsoft Internet technologies and related tools. Being a member of these lists will allow you to tap into the latest information about these tools and technologies, and will provide you with an open forum for asking questions and exchanging ideas with other developers. The ISAPI-L mailing list covers information on developing Internet Information Server API applications. For information on subscribing to the ISAPI-L mailing list and for information on other mailing lists, visit:

Upgrading the Windows NT 3.51 FTP Server Service

If you installed the FTP Server Service on Windows NT version 3.51 and then installed the Internet Information Server 1.0 without installing the Internet Information Server 1.0 FTP Service, the IIS 2.0 FTP Server Service will be unusable when you upgrade to Windows NT version 4.0. The FTP Server Service will start, but will not be usable by clients. To solve this problem, you must remove and then reinstall the FTP Server Service.

To remove the FTP Service:

1. Click Start, point to Programs, Microsoft Internet Information Server (Common), and then click Internet Information Server Setup.
2. Click OK in the Microsoft Internet Information Server Setup 2.0 dialog box.
3. Click Add/Remove.
4. Type <compact disc drive letter>:\<platform>\inetsrv where <compact disc drive letter> is the drive letter of your CD-ROM drive, and platform is Alpha, I386, Mips, or PPC. For example, type d:\I386\inetsrv.
5. Click OK.
6. Clear the FTP Service check box and then click OK.
7. Shutdown and restart your computer.

After rebooting your computer, repeat the procedure, but at step 6, select the FTP Service check box by clicking it. You will need to set the virtual directories appropriately. For more information, consult the online Internet Information Server Installation And Administration Guide.

ODBC 3.X Windows NT 4.0 Upgrade or Internet Information Server 2.0 Setup

ODBC may be disabled in the following two scenarios:

• If you performed an upgrade of Windows NT 3.51 to this release, ODBC will be disabled.
• If you installed IIS 2.0, during either an upgrade or a new installation, ODBC will also be disabled.

To restore your installation of ODBC 3.0, you must reinstall ODBC 3.0. Refer to the product documentation for your specific application in order to reinstall ODBC 3.0.

Internet Information Server Setup May Be Disabled After Installing ODBC 3.0

If you installed Internet Information Server 2.0 and start the Internet Information Server 2.0 setup program from the start menu item, it may display a message which says that the SqlInstallODBC entry point is missing. To work around this problem, run the IIS setup program again. The program must be run from platform\inetsrv\inetstp.exe on the Windows NT compact disc.

To run inetstp.exe for IIS 2.0:

1. Insert the Windows NT Server compact disc in the drive.
2. Type d: and then press ENTER.
3. Type cd \<platform>\inetsrv and then press ENTER.
4. Type inetstp.exe and then press ENTER.

To run inetstp.exe for Peer Web Services:

1. Insert the Windows NT Workstation compact disc in the drive.
2. Type d: and then press ENTER.
3. Type cd \<platform>\inetsrv and then press ENTER.
4. Type inetstp.exe and then press ENTER.

Internet Information Server Default File is Changed to Default.htm on Upgrade

Upon upgrade from Internet Information Server 1.0 or an earlier version of Internet Information Server 2.0, the Default Document for the WWW Service will be set to Default.htm. If you previously had a different default document, you need to change it in the Microsoft Internet Service Manager. Go to the start menu and click on "Programs/Microsoft Internet Server/Internet Service Manager". This will start the Microsoft Internet Service Manager. Double click on the WWW line in the display. Click on the Directories tab and edit the Default Document edit box. Click OK.

Account Lockout

In this release of Windows NT, your user account can become locked out when you try to connect to network resources using the Run dialog box (accessed by clicking Run on the Start menu). When this problem occurs, the following error message appears: This problem occurs when the following conditions are true:

• Account Lockout is enabled on the computer you are attempting to connect to.
• You have an identical account name on the computer you are attempting to connect to.
• The two accounts have different passwords.
• You are specifying a UNC path containing both the server and share names (for example, \\Server\Share).
• You are attempting to connect to the server using the Run dialog box (accessed by clicking Run on the Start menu).

This problem does not occur when you attempt to access a computer that is a member of the domain you are currently logged on to (but which also has a local account name that is identical to yours). This problem is more likely to occur in a workgroup environment or between domains where there is no trust relationship.

This problem occurs because Windows NT attempts the remote logon multiple times instead of displaying the Incorrect Password dialog box. Even if the server administrator increases the number of bad logon attempts that are allowed before account lockout occurs, for example to 10, the problem still occurs. After the sixth logon attempt the Incorrect Password dialog box appears and you are given the opportunity to enter the correct password. However, after you log off, log back on, and then attempt to connect to the same share again, your account is locked out due to the number of previously recorded bad logon attempts. If this problem occurs, map a drive by right-clicking on Network Neighborhood, clicking Map Network Drive, and entering the server and share information in the Path box.

Installing Client-Based Network Administration Tools on a Computer Running Windows NT Workstation (Running Setup.bat)

To install the Windows NT Server Administrative Tools on a computer running Windows NT Workstation, the Setup.bat file must be run from \Clients\srvtools\winnt directory at the command prompt. Setup.bat is located on the Windows NT Server compact disc in the \Clients\srvtools\winnt folder.

Remote Administration from Windows 95

Additional server administration tools are now able to run remotely on Windows 95 desktops to further simplify administration of distributed networks with Windows NT Server computers. For more information, see CLIENTS\SRVTOOLS\WIN95\README.TXT on the Windows NT Server compact disc.

Remote Administration Tools and FPNW/DSMN

Some versions of the Windows NT Administrative Tools for use by Windows 95 and Windows for Workgroups users can cause corruption of user account data when used to administer NetWare-enabled user accounts. Do not use the following versions of these tools to administer NetWare-enabled (File and Print Services for NetWare or Directory Service Manager for NetWare) users on servers running either Windows NT Server version 3.51 or Windows NT Server version 4.0:

• The versions shipped with the Windows NT 3.51 Resource Kit.

The FPNW-enabled version of the administration tools for Windows 95, previously posted on CompuServe, can be used to administer FPNW and DSMN users.

Remote Booting of Windows 95 Clients

The Remoteboot Service now supports remote booting of Windows 95 clients. This simplifies the use of Windows 95 on "diskless" desktops connected to a server running Windows NT.

Roaming User Profiles

When you specify a user's home directory as their user profile directory in User Manager for Domains, the contents of the home directory are copied to the user's computer at logon. The same files are copied back to the server at logoff. This causes extended delays when the user has a large amount of data in the home directory. This might also lead to version problems as users modify different copies of their files.

If copying the user's home directory as part of the roaming user profile uses up the free disk space, entries are written to the system event log and error messages appear. If this situation occurs, look in the User Profile tab of the System icon in Control Panel. There you can see the currently cached user profiles and how much space they occupy.

NOTE: The %username% variable does not resolve to the user name when used in the User Profile Path: it is taken literally, and the path is created and used.

Documentation Updates

The information in this section is included to provided additional or corrected information from the documentation set.

Character Limitations on Volume Labels

FAT volume labels cannot contain any of the following characters, including spaces. This limitation does not apply to NTFS volumes.

Performance Monitor

• A perfmon System Object called "Processor Queue Length" returns values

other than 0 even when not monitoring a thread counter. The documented behavior of this counter is that it should always return 0 when not monitoring a specific thread counter.

• You can now use DNS names when specifying which computer to monitor.

Installing Client-Based Network Administrative Tools on Windows NT Workstation

To install the Windows NT Server Administrative Tools on a computer running Windows NT Workstation, the Setup.bat file must be run from \Clients\srvtools\winnt directory at the command prompt. Setup.bat is located on the Windows NT Server compact disc in the \Clients\srvtools\winnt folder.

To install the administrative tools:

1. Insert the Windows NT Server compact disc in the CD-ROM drive.
2. Click Start, point to Programs, and then click Command Prompt.
3. Type <cd rom drive letter>:\clients\srvtools\winnt\setup.bat where <cd rom drive letter> is the CD-ROM drive
4. Follow the on-screen instructions.

System Policy

System policy can be defined for both users and groups. The order of precedence of system policies can be set for instances where a user is a member of multiple groups. Three settings are available for each policy item (enabled, disabled, or not specified). These policy settings are saved to the Netlogon share of the Primary Domain Controller (PDC), where they are replicated to the BDCs in the domain. When a user logs on, the NTConfig.pol file (depending on the client) is parsed for policy settings to apply.

When a user logs on, the user policy (as defined in System Policy Editor) for the user is applied. If a user-specific policy is not applied the default user policy is applied followed by the group policies in priority order:

• The lowest priority (as defined in System Policy Editor) group policy for the user is applied.
• The next highest priority group policy is applied, and this step repeats until the policies for all of the user's groups have been applied.

Testing Your Newly Created Recovery Disk

1. Insert the fault-tolerant boot floppy disk and restart the computer.
2. If your boot selection correctly specifies the alternate ARC path to the

secondary mirrored partition, your system should begin to boot and then fail with the following STOP message:

User Manager

Profiles are no longer limited to having .pds or .pdm extensions. Windows NT version 4.0 profiles have .man or .usr extensions, but they can have any extensions.

If you have a mixed work environment of computers running Windows NT version 3.51 and Windows NT version 4.0, you should use the .man or .usr extensions for compatibility. When Windows NT version 4.0 encounters a profile with a .usr or .man extension, it will create a matching directory with the .pds or .pdm extension.

User Rights for Viewing the Security Log in Event Viewer

The Security Log in Event Viewer can be made available only to certain groups of users. This can prevent anyone with ordinary Administrative rights from viewing or deleting the log.

The "Managing auditing and security Log" right allows users to view and to clear the Security Log. By default, this right is granted to members of the Administrators group. However, you can grant this right to a special group if you want, and revoke it for Administrators.

How to Recover a Server

To minimize the time necessary to recover the server, you can create a recovery drive. This is an external SCSI drive, as small as 100 MB. It can be a dedicated disk drive, which sits on the server's SCSI chain, but is powered off to prevent accidental modification, or it can be a pooled portable drive, which you can then cable to any server that fails.

NOTE: The pooled portable drive must be identical to the drive that fails.

The emergency repair disk (ERD) enables you to recover desktop and application settings as well as disk partitions. In addition to the ERD, you should also have a boot or recovery disk around. The boot or recovery disk is useful if you encounter a boot sector virus or mirror set failures. See the Windows NT Server Resource Kit version 4.0 for more information.

Windows NT Server Books Online

For Windows NT Server, online versions of the Concepts And Planning Guide and the Networking Supplement are available through a tool called Books Online.

Before you can view the online books, you need to copy the Books Online files from the \Support\books folder on the Windows NT Server compact disc to the \Help folder in the Windows NT Server folder on your hard disk or network. For more detailed instructions about copying the Books Online files, see the Readme.doc file in the \Support\books folder of the compact disc.

The Books Online program can be accessed by clicking the Start button, pointing to Programs, and then clicking Books Online. The first time you run the Books Online program, you set the location of the online books. Thereafter, the online books open automatically from that location.

Personal and Common Groups

Under Windows NT version 3.51, if the administrator of a computer installed an application, the groups created for Program Manager would be "common," that is, visible to all users who logged on to that computer.

In Windows NT version 4.0, program groups have been replaced by folders containing shortcuts to various applications. The common groups are separated by a horizontal line on the Programs menu.

Application installation programs create either common program groups or personal program groups. A few applications create both a common and a personal program group. If you upgrade from Windows NT version 4.0 Beta 1 to the final version of Windows NT version 4.0, you might have duplicate groups. Extra (Common) groups can be deleted. Other applications fail to create a program group. These variables depend on the user rights assigned to you when you install the program.

Using Disk and File Maintenance Tools with Windows NT

Disk tools, such as ScanDisk, and file maintenance tools that are not designed to use long filenames should not be used on volumes containing Windows NT Workstation or Windows NT Server versions 3.51 or 4.0 files. The tools can corrupt long filenames, which can lead to data loss.

Long filenames are those that are longer than eight characters, have a file extension longer than three characters, contain spaces, or multiple periods.

Assigning Drive Letters using Disk Administrator

If you encounter an "internal error occurred" message while assigning drive letters to certain hard disk partition configurations using Disk Administrator, exit the program and restart Disk Administrator. You will then be able to assign drive letters correctly.

Registry Editors

Windows NT Setup installs two versions of Registry Editor: the Windows NT Registry Editor (REGEDT32.EXE) and either the Windows version 3.x version of Registry Editor (REGEDIT.EXE) or the Windows 95 version (REGEDIT.EXE).

The Windows NT version of Registry Editor is installed in the %systemroot%\system32 directory. The Windows 3.x version (16-bit), or the Windows 95 version (32-bit) of Registry Editor is always installed in the %systemroot% directory (typically, c:\winnt).

The version of Registry Editor that Setup installs depends on whether or not Setup detects the presence of Windows version 3.x in the directory where it is installing Windows NT version 4.0. If Setup detects that it is installing Windows NT in a directory that contains Windows version 3.x, or that it is upgrading Windows NT version 3.x that was originally installed in a directory which contained Windows version 3.x, Setup installs the Windows 3.x version of Registry Editor. In all other cases, Setup installs the Windows 95 version of Registry Editor.

Systems installed with the Windows 3.x version of Registry Editor can still use the Windows 95 Registry Editor. To do so, copy the following files from the Windows NT version 4.0 compact disc: Regedit.exe, Regedit.hlp, and Regedit.cnt. Do not copy these files to the %systemroot% directory, as they may replace the Windows version 3.x Registry Editor files, which will prevent users from installing applications when running Windows version 3.x. You can copy the Windows 95 files to any other directory.

Command Extensions

Command Extensions are enabled by default in Windows NT version 4.0. However if you are upgraded from Windows NT version 4.0 Beta 1, you may be missing the required registry key, and Command Extensions will not be enabled, even if you run "cmd /x." To correct this problem, add the following to your registry:

   HKEY_CURRENT_USER\Software\Microsoft\Command ProcessorValue:
   EnableExtentionsType: REG_DWORDSetting: 1
			

Once this key and value exists, the behavior of a command session can be changed with "cmd /x" to enable the extensions, and "cmd /y" to disable the extensions.

For a complete description of Command Extensions and the commands that are affected or changed by enabling the extensions, run "cmd /x /?"