Microsoft KB Archive/256507

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PSS ID Number: 256507

Article Last Modified on 6/26/2003

The information in this article applies to:

  • Microsoft Windows NT Server 4.0 SP6
  • Microsoft Windows NT Server 4.0 SP6a

This article was previously published under Q256507


When you connect to a computer that is running Remote Access Services (RAS), you are successfully authenticated by a Windows NT 4.0-based domain controller. However, if you disconnect and then immediately reconnect, you may receive the following error message:

A domain controller for your domain could not be contacted. You have been logged on using cached account information. Changes to your profile since you last logged on may not be available.


This problem can occur if the RAS client receives a new Transmission Control Protocol/Internet Protocol (TCP/IP) address from the RAS server when you reconnect. The authenticating domain controller does not update its local NetBIOS name cache with the new TCP/IP address of the RAS client, causing the RAS client authentication not to succeed.


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 NT 4.0 service pack that contains this fix.

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 should have the following file attributes or later:

  Date        Time         Size    File name     Platform
  03/02/2000  03:38p       123,216 Netbt.sys     Intel
  03/02/2000  03:36p       222,992 Netbt.sys     Alpha


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.

Keywords: kbnetwork kbWin2kSP4fix kbbug kberrmsg kbfix KB256507
Technology: kbWinNT400search kbWinNTS400search kbWinNTS400sp6 kbWinNTsearch kbWinNTSsearch