LICENSE: Licensing Error R201
Information in this knowledgebase article applies to:
During Compilation, I see the licensing error R201, i.e.:
R201: INVALID LICENSE ID CODE (LIC)
What are possible causes, and how can I fix this error?
License error R201 appears if the current CID (Computer ID) does not match the CID encoded in the LIC (License ID Code) found in the file: C:\Keil\TOOLS.ini.
Several circumstances lead to such a mismatch:
Contact the Keil Support if the problem persists.
Last Reviewed: Wednesday, October 21, 2020
of your data.