If you are using a network license (from a university or company), your connection might be the culprit. Disable Internet:
If you encounter this error, follow these steps to diagnose and resolve the issue. Check Your Network Connection
If working offline, use the "Borrow" feature in the Aspen License Manager to lock a license to your machine temporarily.
This message typically appears immediately upon launching the software or when trying to run a simulation. It brings your workflow to a screeching halt. You are left staring at a dialog box with no clear path forward. Aspen Hysys License Checkout Failed
Delete or rename temporary configuration files if advised by your IT guidelines. Restart your computer and try launching HYSYS again. Preventative Best Practices
On the client machine:
Ensure you are connected to your organization’s if working remotely, as most institutional licenses require a direct network handshake. If you are using a network license (from
Before diving into the fixes, it helps to understand why this error happens. The most frequent culprits include:
Click , then click Environment Variables .
: If you are using a shared token system, the error may occur because all licenses are currently in use . Ensure you have closed all other open Aspen instances (Plus, EDR, etc.). Delete or rename temporary configuration files if advised
Once you have solved the "Checkout Failed" error, implement these best practices to ensure it never returns:
Edit the Sentinel configuration file to automatically reclaim seats from inactive users after a set period of idling. To help narrow down your specific issue, please tell me: