Windows NT Does Not Support Hardware Keys ("Dongles") (102172)


The information in this article applies to:

  • Microsoft Windows NT Server 3.1
  • Microsoft Windows NT Workstation 3.1
This article was previously published under Q102172

SUMMARY

Some MS-DOS-based applications require that you plug hardware keys into an LPT port for copy-protection purposes. These hardware keys (sometimes called "dongles") are not supported with Windows NT.

MORE INFORMATION

Hardware keys usually require a device driver that has direct access to hardware. Software vendors who use hardware keys need to write a special MS-DOS-based device driver and a virtual device driver (VDD) to allow their applications to run with Windows NT.

The following products require such drivers:

  • Micro Focus COBOL uses a hardware key and does not have device drivers available at this time to support Windows NT.
  • Tango Schematic
  • Tango PCB (printed circuit board)
  • Tango Route
  • Clarity fails under Windows NT 3.51 because it cannot locate the hardware key.
The listed products are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding their performance or reliability.
Modification Type:MajorLast Reviewed:10/29/2003
Keywords:kb3rdparty KB102172
©2003 Microsoft Corporation. All rights reserved.