LICENSE: Licensing Error R201

Information in this knowledgebase article applies to:

• Any Keil product registered with a Single-User License

QUESTION

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?

ANSWER

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:

• Wrong LIC
  If you have copied the Keil installation folder, you may also have replicated the TOOLS.ini. Such a TOOLS.ini can then point to old LIC, or a LIC from some other computer. If the product locates such an outdated TOOLS.ini, this mismatch is created. Solution: Search your computer for multiple appearances of TOOLS.ini, identify the outdated versions and remove them.
• Hardware changes
  If parts of the computer were changed, or if the hard disk was significantly modified (like formatted or OS upgrade) then relevant parts of the CID did change, causing the mismatch. Solution: Uninstall the LIC and then request a new LIC.
• Multi-Processor system
  If the computer has multiple processors (not cores in 1 processor), the CID generation is not constant, causing the mismatch. Solution: µVision: Dual Processor PCs and Keil µVision IDE

Contact the Keil Support if the problem persists.

MORE INFORMATION

• Refer to Licensing Errors in the Licensing User's Guide.
• Refer to License Management in the Licensing User's Guide.

SEE ALSO

• Refer to LICENSE: Does a Hardware Change Require a New LIC?
• Refer to µVision: Dual Processor PCs and Keil µVision IDE
• Refer to LICENSE: What Is a CID?

Last Reviewed: Wednesday, October 21, 2020