ERROR 405: Cannot reinstall license

If grbgetkey produces a message that looks like this:

info  : grbgetkey version 11.0.3, build v11.0.3rc0
info  : Contacting Gurobi license server...
error : ERROR 405: Cannot reinstall license 999999; get a new license from the Gurobi website

This means you are trying to set up an Individual Academic Named-User license on a computer different from the one for which it was generated. 

To resolve the issue, simply request a new academic license. Connect your computer to the university network, then follow the instructions for Retrieving a Free Individual Academic Named-User License.

Note: If you would like to use your license on more than one computer, we recommend you use an Academic WLS license instead of an Academic Named-User license. 

Further information

• How can I use Gurobi on multiple computers for my academic research?
• How do I resolve the error "grbgetkey: command not found" or "'grbgetkey' is not recognized"?