ARM Technical Support Knowledge Articles


Applies to: C51 C Compiler


Information in this article applies to:


I just downloaded and installed an update and I now receive the following message when I compile:

Warning C500: Missing Device (Security Key Not Found)

Did I do something wrong?


If you are a USA customer...

You may need a new ADD-ON disk to solve this problem. Please contact our technical support department and request a new ADD-ON disk. Be sure to include your serial number as well as your complete mailing address.

If you a customer from outside the USA...

This usually indicates that you forgot to enter the serial number when installing the update. Re-run the setup program and enter your serial number when prompted.

Article last edited on: 2005-07-19 10:30:51

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