ArcMap hangs unexpectedly when a license is checked out from the license manager. Verify the behavior in ArcMap and license manager (current release) and describe the behavior in ArcGISPro as described in https://esri.lightning.force.com/lightning/r/Knowledge__kav/ka15x0000008eWhAAI/view.
Open ArcGIS Administrator and remove the license manager.
Use a single use license for off-site work.
Verify the behavior in ArcMap and license manager (current release) and describe the behavior in ArcGIS Pro as described in https://esri.lightning.force.com/lightning/r/Knowledge__kav/ka15x0000008eWhAAI/view.