Nessus — Offline Activation License Already In Use Full //top\\

An administrator generates a challenge file but loses network connectivity or gets interrupted. They generate a second challenge file without deleting the first. They then upload the first challenge file to Tenable’s portal, download a license, but attempt to install that license on the scanner that now has a second challenge file active. The mismatch is immediate. The error message appears because the license file contains a hash of the original challenge, which no longer matches the scanner’s current state.

On your offline machine, open a command prompt and run the command nessuscli fetch --challenge . Obtain the License File: nessus offline activation license already in use full

Even though your scanner is offline, you must use an online machine to check your Tenable license usage. An administrator generates a challenge file but loses

/opt/nessus/sbin/nessuscli fetch --register-offline <your_activation_code> The mismatch is immediate