Scroll down to find and Aspen Licensing Service .
Set the variable name to LSHOST and the value to the exact hostname or IP address of your corporate license server. If there are multiple servers, separate them with a semicolon (e.g., server1;server2 ). Restart your computer and try launching Hysys again. Step 4: Use the AspenTech License Diagnostics Tool
If the error persists, contact your organization‘s IT department or AspenTech support with the error details, including the exact error code and error message text from the SLM dialog. Be prepared to provide the license server hostname and port information for network licenses, and confirm whether the issue affects a single user or an entire team, as this helps isolate whether it’s a client-specific problem or a server-wide licensing issue. Aspen Hysys License Checkout Failed
Aspen Hysys is a popular process simulation software used in the chemical, petroleum, and energy industries. It provides a comprehensive platform for designing, optimizing, and analyzing various processes. However, users often encounter issues while working with Aspen Hysys, and one of the most common problems is the "Aspen Hysys License Checkout Failed" error. In this article, we will discuss the causes of this error, troubleshooting steps, and possible solutions.
With the updated license file, you're able to launch Aspen Hysys successfully. The software checks out a license from the server, and you're back to work, modeling and analyzing your chemical plant design. Scroll down to find and Aspen Licensing Service
Before diving into solutions, it's helpful to understand what this error actually means. When you launch Aspen HYSYS, the software communicates with a license manager (either locally on your computer or on a network server) to verify that you have the right to use the software. The "License Checkout Failed" error occurs when this verification process is interrupted or cannot be completed.
Even if your license is valid, you will get a checkout failure if all available seats (tokens) are currently in use by other engineers. Open the to see how many tokens are currently checked out. If the utilization is at 100%, you must wait for a colleague to close Hysys or request more seats. Match Software and License Versions Restart your computer and try launching Hysys again
If HYSYS cannot find the server automatically, you can manually point it to the correct location using Windows Environment Variables. Go to . Click Environment Variables . Under System Variables , click New . Variable Name : LS_HOST
Scroll down to find and Aspen Licensing Service .
Set the variable name to LSHOST and the value to the exact hostname or IP address of your corporate license server. If there are multiple servers, separate them with a semicolon (e.g., server1;server2 ). Restart your computer and try launching Hysys again. Step 4: Use the AspenTech License Diagnostics Tool
If the error persists, contact your organization‘s IT department or AspenTech support with the error details, including the exact error code and error message text from the SLM dialog. Be prepared to provide the license server hostname and port information for network licenses, and confirm whether the issue affects a single user or an entire team, as this helps isolate whether it’s a client-specific problem or a server-wide licensing issue.
Aspen Hysys is a popular process simulation software used in the chemical, petroleum, and energy industries. It provides a comprehensive platform for designing, optimizing, and analyzing various processes. However, users often encounter issues while working with Aspen Hysys, and one of the most common problems is the "Aspen Hysys License Checkout Failed" error. In this article, we will discuss the causes of this error, troubleshooting steps, and possible solutions.
With the updated license file, you're able to launch Aspen Hysys successfully. The software checks out a license from the server, and you're back to work, modeling and analyzing your chemical plant design.
Before diving into solutions, it's helpful to understand what this error actually means. When you launch Aspen HYSYS, the software communicates with a license manager (either locally on your computer or on a network server) to verify that you have the right to use the software. The "License Checkout Failed" error occurs when this verification process is interrupted or cannot be completed.
Even if your license is valid, you will get a checkout failure if all available seats (tokens) are currently in use by other engineers. Open the to see how many tokens are currently checked out. If the utilization is at 100%, you must wait for a colleague to close Hysys or request more seats. Match Software and License Versions
If HYSYS cannot find the server automatically, you can manually point it to the correct location using Windows Environment Variables. Go to . Click Environment Variables . Under System Variables , click New . Variable Name : LS_HOST