Here are instructions to upgrade AMPL-Gurobi on Microsoft Windows:
amplgurobi9.0.1_mswin64.zip
. This will create a folder called AMPL, which contains the AMPL-Gurobi software. (Note that your unzip utility may embed this AMPL folder inside a folder such as amplgurobi9.0.1_mswin64
).ampl.lic
license key to the AMPL folder that was created in the previous step.