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Power Manager Integration Utility Error, "A fatal error has occurred."

Issue:
Customer receives the following error when he attempts to login to the Power Manager Integration Utility with known credentials:

Integration Utility Error
A fatal error has occurred.
Please check log file for details.

The following error can also be found in the Window's Application Log:
 
Event code: 3005 
Event message: An unhandled exception has occurred. 


Application information: 
Application domain: /LM/W3SVC/1/ROOT/EWS-2904-131480783634520560 
Application Virtual Path: /EWS 
Application Path: C:\Program Files (x86)\Schneider Electric\Power Monitoring Expert\Applications\EWS\ 

Exception information: 
Exception type: HttpException 
Exception message: Could not load application modules service inventory. Are the services running? 
at System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) 
at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) 
at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) 
at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) 
at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) 

Could not load application modules service inventory. Are the services running? 
at CWS.Global.Application_Start(Object sender, EventArgs e) 

Product Line:
Power Manager

Environment:
Power Manager Integration Utility login

Cause:
The 3 Application Module Services are stopped

Resolution:
Start the following ApplicationModules Services: ApplicationModules CoreServicesHost, ApplicationModules DataServicesHost, and ApplicationModules ProviderEngineHost.

To start the aforementioned services:
  1. Open Windows Service Manager (Click Start > Type services.msc)
  2. Locate the 3 following ApplicationModules services:
    ApplicationModules CoreServicesHost
    ApplicationModules DataServicesHost
    ApplicationModules ProviderEngineHost
  3. Right-click on each of them and select Start
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