cannot started service after deploy http.sys application

[Stéphane]

i try to test Http.sys application sample "HttpSysDemo" with Intraweb 15.0.17

in DPR file :
TIWStartHSys.Execute(False);

then i deploy then HttpSysDemo1.exe as service with cmd run as administrator :
sc create HSysApp1 binPath="C:\PROJETS\\Intraweb\Samples\15\Delphi\HttpSysDemo\App1\Win32\Debug\HttpSysDemo1.exe"

When i try to start the service in the previous cmd windows with :
net start HSysApp1

the result is :


Le service HSysApp1 démarre........ (i.e. HSysApp1 service starts......)

Le service HSysApp1 n’a pas pu être lancé. (i.e. HSysApp1 service cannot be started)

why ? i don't find any detail about this failure.
Any  idea please ?