The "License Checkout Failed" error typically occurs due to communication gaps between the client machine and the AspenTech License Server, or services like the Sentinel LDK License Manager SLM (Software License Manager) not running. Core Functionalities One-Click Diagnostic Service
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"
Misconfigured registry keys, outdated client tools, mismatched software versions, or expired license keys ( .lic files). Step-by-Step Troubleshooting Guide
Wait one minute, then attempt to open Aspen HYSYS on the client machine again. 5. Check Token Availability via WlmAdmin When a server runs out of seats, it denies new checkouts. Aspen Hysys License Checkout Failed
If you need to narrow down the specific cause of your error, please let me know: What of Aspen HYSYS are you running?
License server: 27100@server_name (or @localhost )
: HYSYS uses a token-based system. Ensure no other instances of HYSYS, Aspen Plus, or EDR are running on your machine or others in your network pool that might be exhausting the available seats. The "License Checkout Failed" error typically occurs due
Start with these basic local checks before modifying server configurations. Restart the License Service
: The utility must request administrative rights to restart Windows Services ( services.msc Compatibility
Unable to checkout a license for Aspen HYSYS. Check Token Availability via WlmAdmin When a server
Feature: HYSYS_Process (or HYSYS_Dyn , HYSYS_SteadyState , etc.)
: Instead of a generic "Failed" popup, the error message includes a "Run Diagnostics" Visual Status Indicators : A dashboard showing: Service Status : Green (Running) / Red (Stopped). Server Reachability : Successful ping to the license server. License Availability : Number of seats currently free in the pool. Technical Requirements Permissions
The AspenTech License Configuration tool is the bridge between your software and the license key.
Ensure the correct server name or IP address is listed under the "Server" tab.
If you have administrative access to the license server itself, the service may simply need a refresh.