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When I try to install the Keil tools under Windows NT, I receive the following error message:

Hidden Console of WOW VDM
The NTVDM CPU has encountered an illegal instruction.
CS: 04c3 IP:3937 OP:c71c 9d 37 00
Choose Close to terminate the application.

What is wrong?


This error message indicates a problem with your Windows NT installation. Refer to the Microsoft Support web site at, select Windows NT 4, and search for WOW VDM.

You may also click on the following link to review the support information from Microsoft.

Article last edited on: 2004-11-23 15:46:32

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