Administrators in charge of a domain that uses Active Directory are usually pleased at the way AD can be used to manage both user accounts and machines. But the advantages of AD are limited to the machines that can use it: namely, Windows XP and Windows 2000. Windows 95/98/ME and NT 4.0 clients aren't supported by Active Directory, and so workstations with those operating systems are left out in the cold, so to speak, with only the most minimal compatibility. A common answer to such a problem is to upgrade the older clients, but if the money simply isn't there to do so, another strategy is in order.
To that end, Microsoft has released a set of Active Directory Client Extensions for Windows 95 (and its successors) and Windows NT 4.0. The Windows 95 version can be found on the Windows 2000 CD, in the CLIENTSWIN9X folder, and can be downloaded from Microsoft. You can also download the Windows NT 4.0 version.
Note that NT 4.0 clients must be running Service Pack 6a, and a version of Internet Explorer no earlier than 4.01.
This extension does not allow the listed operating systems to use all of Active Directory's functions, but it allows enough of a function set to meet most users' AD needs. (If you need more than the features supported by the patch, it's time to think seriously about upgrading at least a few of your clients.)
Here is a rundown of the features in the Active Directory Client Extensions patch:
If you want to ensure that a given client can make use of many of these features, you must install it as a computer object in the relevant Windows 2000 domain. Since this is not done for Windows 9x systems by default, the administrator needs to take the time to add the computer(s) in question once they are patched, and make sure they are AD-aware.
The administrator should also be aware that there are several Active Direct
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ory features not supported through the Client Extensions:
Some caveats about usage are in order. When joining a newly-patched NT 4.0 machine to the domain, first try pre-creating the computer account for that machine with the SRVMGR program from the Windows 2000 domain controller. This may have to be done when merging an NT backup domain controller into a mixed-mode Windows 2000 Active Directory domain. Microsoft Knowledge Base article 242432 has more information on how to do this.
About the author: Serdar Yegulalp wrote for "Windows Magazine" from 1994 through 2001, covering a wide range of technology topics. He now plies his expertise in Windows NT, Windows 2000 and Windows XP as publisher of "The Windows 2000 Power Users Newsletter," writes technology columns for various TechTarget sites and serves as resident expert for SearchWin2000.com's Desktop Administration and Management Tools and Solutions Ask the Experts categories.
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