You have two options to free a slot:
On the original Nessus scanner:
A confirmation will appear; once finished, the status will show as available for a new installation. 2. Perform the Offline Activation nessus offline activation license already in use full
, you cannot deactivate it yourself. Proceed to Solution 2. You have two options to free a slot:
Review: Nessus Offline Activation and the "License Already in Use" Error nessus offline activation license already in use full
Configure and license your Nessus VM cloning from a template, not before. Or use sysprep (Windows) or cloud-init (Linux) to reset machine IDs before licensing.
