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Home > Success Center > Network Performance Monitor (NPM) > Orion is working but there's an error in the event logs Core Business Layer which leads to failure to start

Orion is working but there's an error in the event logs Core Business Layer which leads to failure to start

Updated: July 29, 2016

Overview

This article describes the issue when Orion is working but there's an error in the event logs Core Business Layer which leads to failure to start.

Environment

All versions of NPM 

 

Cause 

A copy of Solarwinds.Orion.Core.Businesslayer.dll.config was in C:\:Program Files (x86)\Solarwinds\Orion. The system was trryig to load the core business layer again and could not  as it was already loaded. Error < ERROR SolarWinds.BusinessLayerHost.PluginInstanceAppDomain - Plugin "Core Business Layer" failed to start. System.ServiceModel.AddressAlreadyInUseException: Cannot listen on pipe name 'net.pipe://localhost/orion/core/businesslayer' because another pipe endpoint is already listening on that name. ---> System.IO.PipeException: Cannot listen on pipe name 'net.pipe://localhost/orion/core/businesslayer' because another pipe endpoint is already listening on that name. >

 

Resolution

  1. Browse to C:\Program Files (x86)\Solarwinds\Orion.
  2. Remove the copy of Solarwinds.Orion.Core.Businesslayer.dll.config save to a directory outside of C:\Program Files (x86)\Solarwinds\Orion.
  3. Restart the module engine.

 

 

Resolution 2:

1. Stop all services
2. Remove the "SolarWinds.Orion.Core.BusinessLayer.dll.config" file from NCM installation folder (C:\Program Files (x86)\Solarwinds\Orion\NCM)
3. Start all services

 

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