: Once reset, you can proceed with the standard offline activation steps using your unique challenge code and the now-available activation code. Standard Offline Activation Workflow
: Run the following command to register the license: nessuscli fetch --register-offline nessus.license Common Troubleshooting Tips Update License Offline (Tenable Nessus 10.12) nessus offline activation license already in use full
Immediate remediation steps
On the , set the same hostname, MAC address (using macchanger or VM settings), and disk UUID (advanced) to mimic the old system. : Once reset, you can proceed with the
Before troubleshooting, it is critical to understand how offline licensing differs from online licensing. To resolve the error "Nessus offline activation license
To resolve the error "Nessus offline activation license already in use," you must in the Tenable portal . Nessus licenses are restricted to one active installation at a time; if you are moving Nessus to a new air-gapped machine or reinstalling it, the portal still sees the code as "assigned" to the old instance. 1. Reset Your Activation Code
If you're considering purchasing a Nessus offline activation license, be prepared for potential issues. Ensure you have a clear understanding of the licensing process and have a support plan in place. Tenable should prioritize improving their licensing and support processes to prevent similar issues and provide a smoother experience for users.