The FlexNet® license manager software has been upgraded to version 11.19.8. Before installing and running version 6.4 of the COMSOL software, you will need to update the license manager on your license server. This can be done by running the COMSOL Installer on the license server and, in the list of products, only selecting License Manager. For more information, see the COMSOL Multiphysics® Installation Guide.