Name Resolution Using Lmhosts May Generate System Error 1214

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Article ID: 219381 - View products that this article applies to.
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When you attempt to communicate with a computer listed in the Lmhosts file located on your computer running Windows NT using the NET USE \\computername\share command, you may receive the following error message:
System Error 1214 has occurred/> The format of the specified network name name is invalid.


A number of Netbt.sys drivers have been produced Post-SP4. All of them contained a regression in LMHOSTS parsing. Fixes for the following bugs contained a regression in LMHOSTS parsing:
221150 NET USE to 16 Character Dotted-DNS Name May Fail
214429 Stop 0xA in Netbt.sys When Querying the DNS for a NetBIOS Name

These hotfixes have all been replaced. Any Post-SP4 Netbt.sys dated prior to 2/25/99 should be replaced.


To resolve this problem, obtain the latest service pack for Windows NT. 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 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 NT 4.0 Service Pack 5.


Article ID: 219381 - Last Review: October 14, 2013 - Revision: 1.2
  • Microsoft Windows NT 4.0 Service Pack 4
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition
kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix kbnetwork kbqfe kbwinnt400sp5fix KB219381

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