Is it possible for Qualys to fail on OS fingerprinting? If yes, in what condition?
I'm asking this question because I mapped an IP-range and in the map results, some of IPs didn't have any OS information. And now that I want to perform authenticated scan on that same IP-range, I need the IPs' OS in order to provide Qualys with the appropriate authentication records. I even thought about a manual update of the OS details but apparently it's not an existing feature. Any idea on how I can achieve my goal? Any guidance will be greatly appreciated.