As an additional note you should find various info about such authenticated scans and possible issues (if you have credentials configured) as an “Log” entry of the following two NVTs within your report:
SSH: SSH Authenticated Scan Info Consolidation (OID: 1.3.6.1.4.1.25623.1.0.108162)
SMB/Windows: Windows LSC Authenticated Scan Info Consolidation (OID: 1.3.6.1.4.1.25623.1.0.108442)
This is now documented in a separate thread: