Article ID: 325641
Article Last Modified on 2/20/2007
APPLIES TO
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional Edition
This article was previously published under Q325641
SYMPTOMS
If a client that is located behind a domain controller that has only one network adapter uses Active Directory tools such as Active Directory Users and Computers and tries to connect to some multihomed domain controllers, the client may try to connect to both IP addresses for that domain controller. If the connection to one of the IP address does not work, the overall connection attempt does not succeed and the client receives the following error message:
The following sample scenario demonstrates this problem:
A client in Des Moines tries to connect to a multihomed domain controller in Honolulu that has 130.x.x.x and 140.x.x.x IP address. Although the Des Moines client is on the 140.x.x.x segment, the client tries to synchronize with both IP addresses. The client connects correctly to the 140.x.x.x address but receives a "Host unreachable" response from the 130.x.x.x attempts because this is not a routable IP address for internal use. The client continually retries to connect to the 130.x.x.x IP address. Eventually, the connection attempt does not succeed, and the client disconnects from the 140.x.x.x address also. This causes the error message to occur.
CAUSE
The Lightweight Directory Access Protocol (LDAP) client retrieves all of the IP addresses for the server from DNS. If there is more than one IP address, the client queries all of them. If one of the connections times out early during the connection, the whole connection attempt does not succeed. There is no additional attempt to retry the other IP address connections.
RESOLUTION
Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft 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
Hotfix Information
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:
NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
-----------------------------------------------------------
26-Jul-2002 14:27 5.00.2195.5781 123,664 Adsldp.dll
26-Jul-2002 14:27 5.00.2195.5781 131,344 Adsldpc.dll
26-Jul-2002 14:27 5.00.2195.5781 62,736 Adsmsext.dll
26-Jul-2002 14:27 5.00.2195.5940 358,160 Advapi32.dll
26-Jul-2002 14:27 5.00.2195.5265 42,256 Basesrv.dll
26-Jul-2002 14:27 5.00.2195.5855 49,424 Browser.dll
26-Jul-2002 14:27 5.00.2195.5943 135,952 Dnsapi.dll
26-Jul-2002 14:27 5.00.2195.5595 96,016 Dnsrslvr.dll
26-Jul-2002 14:27 5.00.2195.5722 45,328 Eventlog.dll
26-Jul-2002 14:27 5.00.2195.5907 222,992 Gdi32.dll
26-Jul-2002 14:27 5.00.2195.5859 145,680 Kdcsvc.dll
04-Jun-2002 14:31 5.00.2195.5859 199,952 Kerberos.dll
26-Jul-2002 14:27 5.00.2195.4928 708,880 Kernel32.dll
15-Jul-2002 08:52 5.00.2195.5940 71,024 Ksecdd.sys
22-Jul-2002 16:54 5.00.2195.5960 507,152 Lsasrv.dll
22-Jul-2002 16:54 5.00.2195.5960 33,552 Lsass.exe
26-Jul-2002 14:27 5.00.2195.4733 332,560 Msgina.dll
23-Jul-2002 14:27 5.00.2195.5966 108,304 Msv1_0.dll
26-Jul-2002 14:27 5.00.2195.5979 307,472 Netapi32.dll
26-Jul-2002 14:27 5.00.2195.5966 360,720 Netlogon.dll
26-Jul-2002 14:27 5.00.2195.5979 916,752 Ntdsa.dll
26-Jul-2002 14:27 5.00.2195.5966 387,344 Samsrv.dll
26-Jul-2002 14:27 5.00.2195.5951 129,296 Scecli.dll
26-Jul-2002 14:27 5.00.2195.5951 302,864 Scesrv.dll
25-Jun-2001 19:17 3.10 47,808 User.exe
26-Jul-2002 14:27 5.00.2195.5931 379,664 User32.dll
26-Jul-2002 14:27 5.00.2195.5968 369,936 Userenv.dll
26-Jul-2002 14:27 5.00.2195.5859 48,912 W32time.dll
04-Jun-2002 14:32 5.00.2195.5859 57,104 W32tm.exe
17-Jul-2002 11:45 5.00.2195.5948 1,642,416 Win32k.sys
03-May-2002 11:31 5.00.2195.5731 178,960 Winlogon.exe
26-Jul-2002 14:27 5.00.2195.5935 243,472 Winsrv.dll
26-Jul-2002 14:27 5.00.2195.5944 125,712 Wldap32.dll
26-Jul-2002 14:27 5.00.2195.5774 72,976 Wmicore.dll
22-Jul-2002 16:54 5.00.2195.5960 507,664 Lsasrv.dll
26-Jul-2002 14:27 5.00.2195.4928 708,880 Kernel32.dll
26-Jul-2002 14:27 5.00.2195.5948 1,642,416 Win32k.sys
26-Jul-2002 14:27 5.00.2195.5935 243,472 Winsrv.dll
WORKAROUND
Remove the host record for the addresses that are not routable for the multihomed domain controller from DNS.
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 Microsoft Windows 2000 Service Pack 4.
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 The 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
Keywords: kbhotfixserver kbqfe kbwin2ksp4fix kbdirservices kbbug kbfix kbqfe kbwin2000presp4fix KB325641
