Aspen Hysys License Checkout Failed

The most common cause is that all available licenses are currently checked out by other users.

If the license has expired, a new license file must be obtained from AspenTech. This can be checked by viewing the license file on the server (notepad) and looking for the EXPIRE date strings, or using the debug output in LMTOOLS.

If nothing works, the license file itself may be damaged. Aspen Hysys License Checkout Failed

What you see: “No more licenses available. Checkout failed for HYSYS_Process.”

Reality: Your company bought 10 seats. 10 people are using them. You are #11. The most common cause is that all available

Solutions:

The LSERVRC file (or license file) tells the software what features you own. If this file is missing, renamed, or corrupted, the checkout fails. If the button is grayed out, you have

For engineers who work remotely, "borrowing" a license is common. The error often appears when returning to the office.

The Fix:

If the button is grayed out, you have a stale borrowed license. You must manually delete the borrowed license files, typically found in C:\Users\[YourUserName]\AppData\Local\AspenTech\ (Look for .borrow files).

Sentinel RMS communicates via specific TCP/UDP ports (default is 1877 and 1878). Corporate IT policies, Windows Defender, or third-party antivirus software frequently block these ports.