You cannot generate an offline key entirely within the tool itself; you must use the Katalon Portal (TestOps) from a machine with internet access.
Paid licenses (Katalon Runtime Engine or Katalon TestOps) offer better offline support. Enterprise licenses allow "Floating" or "Node-locked" offline tokens that can last for 30, 60, or 90 days without internet. katalon offline activation free best
If your organization mandates a highly secure environment without external internet access (like a secure lab), paying for an annual subscription is the only native pathway: [Question] Is Katalon Studio still free? - Web Testing You cannot generate an offline key entirely within