Zenon not registered in ROT when launched as service

Zenon not registered in ROT when launched as service

Hello,
I'm developing an .NET application that is designed to interact with Zenon Runtime. Using this piece of code, I retreive the zenOn.Application instance from the ROT (running object table).
C# Code:

try
{
this._zenonApp = Marshal.GetActiveObject("zenOn.Application") as zenOn.Application;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message + ex.InnerException?.Message);
return;
}

Everything works fine when Zenon Runtime is started normally from Zenon Editor. The problem is when the Runtime is started as service, it doesn't get registered in the ROT and exception 'Exception from HRESULT: 0x800401E3 (MK_E_UNAVAILABLE)' will be thrown. Do you know any solution to this problem?
Thank you

TL,DR: Zenon Runtime doesn't get registered in ROT when started as service.

This is a migrated post! Originally posted on 04.08.2016 by user mbi. Please be aware that information can be outdated.