Unnecessary DNS Query for _ldap._tcp.dc._msdcs.<WorkgroupName> (272020)

SYMPTOMS

If your computer is connected to a network, but it is not part of a domain, your computer issues a DNS query for _ldap._tcp.dc._msdcs.WorkgroupName when you use Windows Explorer to set access rights for a shared folder. When you use a demand-dial line to connect to the network, this DNS query may incur unnecessary expense.

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
   --------------------------------------------------------
   
   5/31/2001   03:31p   5.0.2195.3649    78,096   Aclui.dll
   5/31/2001   03:31p   5.0.2195.3649   207,632   Objsel.dll

WORKAROUND

To work around this issue, use Subinacl.exe to set permissions on the shared folder. When you use Subinacl.exe to set permissions on the shared folder, the DNS query does not occur. Subinacl.exe is included with the Microsoft Windows 2000 Resource Kit.

If you are using a forwarder, an unwanted DNS query is sent to the forwarder. To avoid this unnecessary traffic, create a "dummy" DNS zone with the name _ldap._tcp.dc._msdcs.WorkgroupName (where WorkgroupName is the actual name of your workgroup).

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 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

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