Hello Andrew, If you have ArcGIS Pro 2.0 in use, you need to upgrade the licence manager to version 10.5.1. Please have a look at the following page: https://community.esri.com/community/gis/applications/arcgis-pro/blog/2017/06/12/upgrade-to-license-manager-1051-to-use-concurrent-use-licenses-with-arcgis-pro-20 My Regards, Michael
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