If the ping times out, your machine cannot see the server. Contact your IT department to resolve network routing or VPN connectivity. 2. Check the Aspen License Server Status
Verify the value matches the exact hostname or IP address of your license server. 4. Use Aspen SLM Configuration Wizard AspenTech provides a native tool to manage license routing.
Some Aspen HYSYS installations use a physical USB hardware key (dongle) for license verification. If this dongle is damaged, not properly inserted, or the drivers are corrupted, you'll encounter license checkout errors [17†L10-L16].
Firewalls frequently block the UDP traffic required for license validation. Aspen Hysys License Checkout Failed
The client machine cannot ping or communicate with the license server host.
ping YourServerName Fails? Use the IP address instead of hostname in your license file.
The "Aspen Hysys License Checkout Failed" error can be frustrating and disrupt workflow. By understanding the causes of this error and following the troubleshooting steps and solutions outlined in this article, users can resolve the issue and continue working with Aspen Hysys. Regularly updating Aspen Hysys and maintaining accurate license settings can help prevent this error from occurring in the future. If the ping times out, your machine cannot see the server
Open on both the client and server. Click Inbound Rules and select New Rule . Choose Port , click Next, and select UDP .
For users on affected versions (v14.5+), an IIS reset may be required to flush the Process Data REST cache and release stuck tokens.
Follow these sequential steps to diagnose and repair the license checkout failure on your system. 1. Verify Server and Network Connectivity Check the Aspen License Server Status Verify the
The background service that manages Aspen licenses might have stopped. Open the from your Start menu.
Open Command Prompt and type ping [Server_Name_Or_IP] . If packets are dropped, you have a network issue, not a software issue.