I have a web app on win 8 and after stop no start automatic on win services
What does the Windows application event log say? When a service fails to start, it is usually recorded there.
If it runs manually then system priviledges could be the reason. Try to assign administrator to your service.
when i create the service i use administrator user
It is not you using an admin account to create the service that is important, but marking the executable “run as admionistrator” in its properties. (right click the application in Windows Explorer, click properties, select the compatibility tab. There is a checkbox to start the application with administrator privileges).
Did you find any indication in the Windows application event logs to explain why the application does not start? - there should be some trace of the application trying to start.
One more thing to look at: properties of the service. Is the service correctly set on automatic start?