This can be done from the Ansys license management center on the license server.
Download the Ansys License Manager installation package from the Ansys Customer Portal - Downloads or the Ansys Optics - Customer downloads page.Ansys license manager release 2021 R1 and newer.An account with Ansys/Lumerical to download the installation package.This article shows the process to install the Ansys License Manager on a supported Windows platform.