Aspen Hysys License Checkout Failed -

The license file may be outdated and not support the newer version of HYSYS being launched. Troubleshooting Steps Verify Server Configuration Open the AspenONE SLM License Manager from the Start menu.

If these steps do not resolve the issue, you can search for technical tips and submit support tickets through the AspenTech Support Center University of Alberta

The proper location for license files is typically C:\Program Files (x86)\Common Files\AspenTech Shared\ [10†L4-L7].

Open the license directory path: C:\Program Files (x86)\Common Files\Aspentech Shared . Look for .slf or .lic files. If the license file is missing or outdated, rename/delete any expired licenses and copy a valid license file (must have .SLF extension and begin with “lservrc_”, e.g., lservrc_004_3BC4F.SLF ) to that location. For 32-bit systems, the path is C:\Program Files\Common Files\Aspentech Shared . Reinstall the license using the aspenONE License File Installer, found under aspenONE SLM License Manager, to automatically verify and install license files. Aspen Hysys License Checkout Failed

On the client machine:

What is the shown in your Aspen tool logs?

If the vendor daemon is down: Restart the FLEXnet service. The license file may be outdated and not

If HYSYS cannot find the server, you may need to manually point the software to your computer's name using an environment variable. Get Computer Name: Right-click Properties and copy your Device name Open Environment Variables: Search Windows for "Edit the system environment variables." Create 'LS_HOST': System Variables Variable Name: Variable Value: [Your Computer Name] Save and Restart: Click OK on all windows and restart HYSYS. 📂 Step 3: Refresh SLM Admin Tools Sometimes the WlmAdmin.exe tool used for managing licenses becomes unresponsive. Navigate to Directory:

When Aspen HYSYS displays a error, it typically indicates a communication break between your local workstation and the Sentinel RMS or SLM (Software License Manager) server. This can be caused by network interruptions, incorrect environment variables, or server-side restrictions. Immediate Troubleshooting Steps

Ensure you are connected to your organization’s if working remotely, as most institutional licenses require a direct network handshake. For 32-bit systems, the path is C:\Program Files\Common

Ask your IT department or lab supervisor: Is the license server powered on? If a summer storm took down the server room, no amount of clicking will help.

Remember that the most common fix across user experiences is to address security software interference, followed by ensuring proper license server configuration. If you're in an academic or corporate environment, don't hesitate to reach out to your IT department, as they may be able to resolve server-side issues quickly.

If the quick fixes fail, follow this tiered methodology.

Type your server’s name or IP in the field. Click Add Server and then Apply Changes . 4. Handle "All Licenses in Use"