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LICENSE: What Is a CID?


Information in this article applies to:

  • MDK-Arm All Version
  • C51 Version 8
  • C166 Version 6
  • C251 Version 4
  • CARM Version 2

QUESTION

What is the Computer Identification Number (CID)? Why does it change? Where can I find it?

ANSWER

WHAT IS IT?
The CID is a 10-digit, alphanumeric number, generated by µVision, that contains parameters (hard disk ID, MAC address, operating system information and date) which uniquely identify your workstation. The Keil Product Licensing web pages use this information to construct your License ID Code (LIC).

WHY IS IT CHANGING?
The CID also contains current date information, so it changes daily. The changing date will not affect your LIC, so you may re-install a LIC at a later date on the same workstation.

WHERE IS IT?
To find the CID, in the Keil IDE go to File -> License Management to open the License Management dialog. The CID is on the top right corner.

MORE INFORMATION

SEE ALSO

Last Reviewed: Thursday, September 20, 2018


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