Aspen Hysys License Checkout Failed [top] Jun 2026
If the connection is successful but the checkout still fails, check the server's usage.
A valid connection to an expired token file still results in a checkout failure. Open the tool on the server.
If you plan to work without an internet connection, use the Aspen License Borrowing utility while still connected to the network to lock a token to your hard drive locally for a set number of days.
Note: This guide applies to various versions of Aspen HYSYS. If you encounter version-specific issues or continue to experience problems after following these steps, consulting official AspenTech documentation or contacting their support team directly is recommended. Aspen Hysys License Checkout Failed
Use the "AspenTech License Monitor" (if accessible) to see how many seats are currently in use.
If the troubleshooting steps do not resolve the issue, try the following solutions:
Enter the exact hostname or IP address of your license server. Click to save the settings. Restart Aspen Hysys to test the configuration. 3. Verify Environment Variables If the connection is successful but the checkout
Are you using a standalone (local) license or a network-based license from a company or university server?
Use a triad server configuration to prevent single-point-of-failure downtimes.
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Click on , then click Environment Variables . Look under System Variables for LSHOST or LSTSHOST .
The proper location for license files is typically C:\Program Files (x86)\Common Files\AspenTech Shared\ [10†L4-L7].
All available tokens or seats are currently in use by other engineers.
Use the "Test" button within the utility to see if the client can communicate with the server. Check License Availability
