I published my Web Api (framework 4.5) in this path C:\inetpub\wwwroot\MyWebAPI
In my IIS i converted this folder to an app
When i try to access this URL http://localhost/MyWebAPI/api/client/1 a message appears
HTTP Error 503. The service is unavailable.
My App Pool is set to be "STOP", i turn it on but it goes back to "STOP"
I found the solution
The error will surelly change, in my case the error changed to this one
"Config Error: This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false"."
I have found the solution for this other problem here IIS - this configuration section cannot be used at this path (configuration locking?)