Microsoft KB Archive/155701

= Invalid UDP Frames May Cause WINS to Terminate =

Article ID: 155701

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q155701





SYMPTOMS
Invalid UDP frames directed to any computer running WINS raises an exception in WINS causing it to terminate silently. When WINS is no longer running, problems such as domain synchronization, browsing, or connectivity may occur. The event log may contain the following error message:

Event ID: 4119

Source : WINS

Type : Error

Description:

WINS got a packet that has the wrong format (for example, a label may be more than 63 octets).



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack

Microsoft has updated Wins.exe to correct this problem. If WINS receives invalid frames, it logs the event mentioned above but it does not terminate unexpectedly.

NOTE: Service Pack 3 must be applied to Windows NT 4.0 prior to applying this fix.

For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem.

ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/NT40/hotfixes-postSP3/winsupd-fix



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Additional query words: 4.00 wins denial of service attack hangs port 137 stops running

Keywords: kbhotfixserver kbqfe kbbug kbfile kbfix kbnetwork KB155701

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