Microsoft KB Archive/159144

= Dongle May Not Function Under Windows NT 4.0 =

Article ID: 159144

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q159144



SYMPTOMS
Communications on a port dongle under Windows NT can fail because of changes in Ntvdm.exe.



MORE INFORMATION
A dongle is a small device that is attached to a system to provide physical confirmation of a software license.



WORKAROUND
The updated version of Ntvdm.exe, which fixes dongle problems, is available in Windows NT 4.0 Service Pack 2 and later.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.00. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 4.00. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: parallel port Winnt prodnt

Keywords: kbhardware kbsetup KB159144

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