Aspen Hysys License Checkout - Failed 'link'

(found in the AspenTech start menu folder) to re-input the server details and ensure the registry is correctly updated. Run as Administrator

ERROR: Failed to checkout license for product 'Aspen HYSYS'. Return code: -15 Feature: HYSYS_Process License path: 27000@licserver;@localhost; FLEXnet Licensing error: -15, 10. System Error: 10061 "Winsock: Connection refused" Aspen Hysys License Checkout Failed

Uninstall "Aspen License Manager" via Control Panel. Step 2: Delete residual folders: (found in the AspenTech start menu folder) to

"License Checkout Failed. Unable to obtain a license for Aspen Hysys." FLEXnet Licensing error: -15