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LICENSE: Error 1552 at uninstalling a License

Information in this knowledgebase article applies to:

  • Keil MDK
  • Node-Locked License (Single User License)


The uninstallation of my license ends up with this error message:

Please contact Technical Support and report code 1552 for assistance
with your installation.


This error indicates that the TRN code used to un-license the product is valid, but the License key (LIC) embedded in the TRN is invalid. 

This happens when a customer has purchased, but not installed a product upgrade.


Contact the Technical Support Team and ask to uninstall the LIC manually.


Last Reviewed: Tuesday, October 27, 2020

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