Nessus Offline Activation License Already In Use Jun 2026

Once the code is reset, follow these steps to activate your offline scanner:

# /opt/nessus/sbin/nessuscli fetch --register-offline /path/to/nessus.license nessus offline activation license already in use

Move the nessus.license file to your offline scanner and register it using the command line: nessuscli fetch --register-offline nessus.license Once the code is reset, follow these steps

You must manually release the license through the Tenable Support Portal or Community site. Tenable Community Support Portal My Products (usually in the upper right corner). your Nessus Professional or Expert product in the list. Select "Reset Product Activation" or click the option next to the specific activation code. Once the code is reset

Confirm the reset. This frees the code to be paired with a new Challenge Code.