Firewalls or security software are blocking communication between the client and the server. Step-by-Step Troubleshooting Guide
On the (where the license resides):
If the server is active but refusing connection, the concurrent seat pool might be full. Aspen Hysys License Checkout Failed
are open in your firewall, as these are often used for license traffic. 📉 Step 5: Reinstall License File
If all else fails, reach out to AspenTech technical support: 📉 Step 5: Reinstall License File If all
Troubleshooting "Aspen Hysys License Checkout Failed" Errors
ping YourServerName Fails? Use the IP address instead of hostname in your license file. Companies purchase a specific number of concurrent licenses
If the issue persists, search the official AspenTech Support Center for specific error codes (e.g., Error -25 or -5) which often indicate an expired TECS agreement or corrupted license file .
Companies purchase a specific number of concurrent licenses. If every seat is currently checked out by other engineers or stuck in hung sessions, the next person trying to open the software will receive a checkout failed message. 3. Mismatched or Expired License Files
Did this error happen , or is this a brand-new installation ? Share public link
Right-click or My Computer > Properties > Advanced System Settings . Go to Environment Variables . Under System Variables , click New . Set Variable name to LSHOST .
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