Nessus Offline Activation License Already In Use -

The error occurs because Tenable's license server believes the code is currently active on another machine. Common causes include:

Locate the Nessus activation code that is giving you trouble. Look for a "Reset" or "Unlink" button next to the license. nessus offline activation license already in use

nessuscli.exe fetch --register-offline nessus.license The error occurs because Tenable's license server believes

Here is a comprehensive guide on why this happens and how to fix it. Why You See the "License Already in Use" Error nessus offline activation license already in use

If you know you are going to decommission a server or move a VM, run nessuscli fix --reset first to try and release the binding.