C51: WARNING C500 (MISSING DEVICE) AFTER UPDATE
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.
Last Reviewed: Tuesday, July 4, 2017
of your data.