Microsoft KB Archive/318168

= Excessive network traffic may occur when a Windows 2000 client that is connected to a Windows NT 4.0 domain tries to populate the USERDNSDOMAIN environment variable =

Article ID: 318168

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Server

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This article was previously published under Q318168





SYMPTOMS
When a Microsoft Windows 2000 client that is connected to a Microsoft Windows NT 4.0 domain tries to populate the USERDNSDOMAIN environment variable by using a call to a DsGetDCName (API) that has the DS_RETURN_DNS_NAME flag and the DS_IP_REQUIRED flag, excessive network traffic may occur. This issue may occur when the Windows 2000 client runs Microsoft Internet Explorer 6 or Microsoft Outlook Express.



CAUSE
This issue occurs because the DsGetDCName API that has the DS_RETURN_DNS_NAME flag and the DS_IP_REQUIRED flag does not apply to Windows NT 4.0.



Service pack information
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

Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend 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 hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

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 usual 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 hotfix 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-Feb-2002  22:55  5.0.2195.4942      42,256  Basesrv.dll 26-Feb-2002 22:55  5.0.2195.4572     222,480  Gdi32.dll 26-Feb-2002 22:55  5.0.2195.4928     708,880  Kernel32.dll 26-Jun-2001 01:17  3.10.0.103         47,808  User.exe 26-Feb-2002 22:55  5.0.2195.4314     402,192  User32.dll 26-Feb-2002 22:55  5.0.2195.4984     368,400  Userenv.dll 14-Feb-2002 21:56  5.0.2195.4945   1,642,704  Win32k.sys 23-Jan-2002 17:45  5.0.2195.4865     178,960  Winlogon.exe 26-Feb-2002 22:55  5.0.2195.4602     243,472  Winsrv.dll 26-Feb-2002 22:56  5.0.2195.4928     708,880  Kernel32.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

This problem was first corrected in Windows 2000 Service Pack 3.

