Knowledge Base

Invalid LDAP Filter for DHCP Server Authorization

Article ID: 303525

Article Last Modified on 2/19/2007

APPLIES TO

Microsoft Windows 2000 Service Pack 1
Microsoft Windows 2000 Service Pack 2
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Service Pack 1
Microsoft Windows 2000 Service Pack 2

This article was previously published under Q303525

SYMPTOMS

After you apply Windows 2000 Service Pack 2 (SP2), the DHCP Server service is unable to be authorized from Active Directory. Although the DHCP server requests authorization from Active Directory every 5 minutes, DHCP clients cannot obtain a lease or an address, and the System Event log may contain an entry that is similar to the following entry:

Event Type: Error
Event Source: DhcpServer
Event Category: None
Event ID: 1051
Date: 15/06/2001
Time: 9.40.01
User: N/A
Computer: computer name
Description:
The DHCP/BINL service has determined that it is not authorized to service
clients on this network for the Windows domain: domain name.com.
Data:
0000: 00 00 00 00

NOTE: The date and time that are listed in the preceding log entry may vary from the entry in your log.

Or, when you attempt to connect to the Remote Installation Services (RIS) server via Pre-boot eXecution Environment (PXE) network card or Remote Installation Boot Floppy (RBFG) boot disk, the client workstations receive the following error message:

No reply from a server. Press a key to reboot system.

CAUSE

This problem can occur if the LDAP filter request for the DHCP server in Active Directory was incorrect.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date        Time    Version          Size     File name
   ----------------------------------------------------------
   7/23/2001  05:13p   5.0.2195.3913   271,120   Dhcpssvc.dll
   7/23/2001  05:13p   5.0.2195.3913    74,512   Dsauth.dll

WORKAROUND

To work around this problem, use either of the following methods:

Change the IP address so that is has less than 12 digits.
Change the hostname of the DHCP server in lowercase, or create the DHCP server hostname value in Active Directory in uppercase.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

MORE INFORMATION

For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

For additional information about how to make a RBFG, click the article number below to view the article in the Microsoft Knowledge Base:

300483 HOW TO: Use Remote Installation Service to Install Windows 2000

Additional query words: kbNetworking dhcpserver

Keywords: kbbug kbfix kbwin2000presp3fix kbqfe kbwin2000sp3fix kbenv kbnetwork kbhotfixserver KB303525

Microsoft KB Archive/303525

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