I've just experience something new about WAS scan that I would share with you in order to try to understand.
A web application vuln. scan has been launched.
Once running, I've seen 500+ request been done and 350+ links crawled.
Then, it stopped with "no web service" status, after more 5 hours duration
Qualys online documentation says that about this status:
"The scan did not detect the target web service. Scan results will include any information gathered data collected."
No more interesting info. in report.
Only host scan time, DNS host name, and OS detected