Nessus Offline Activation License Already In Use !!exclusive!! Full -
How to Resolve "License Already in Use" Error During Nessus Offline Activation
The support team was responsive, but the process to resolve the issue was lengthy and frustrating. They asked me to provide detailed information about my license, scanner configuration, and usage history. After several back-and-forth exchanges, they determined that the license had indeed been previously activated on a different scanner.
Problem Overview
When attempting to activate Nessus in an offline (air-gapped) environment, users frequently encounter the License already in use error. This occurs because the license was not properly deactivated on a previous instance (e.g., a VM that was destroyed or a scanner that crashed), and the Tenable cloud portal still registers it as active. nessus offline activation license already in use full
Why Does This Error Occur?
/opt/nessus/sbin/nessuscli fix --deactivate How to Resolve "License Already in Use" Error
Generate a fresh challenge:
release
If you have access to the original activated machine (even if offline), you need to the license. Problem Overview When attempting to activate Nessus in
Navigate to the Nessus data directory: