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Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA - Knowledgebase Articles > NTA Business Layer error: NetFlowService will be abnormally terminated - Unhandled exception

NTA Business Layer error: NetFlowService will be abnormally terminated - Unhandled exception

Updated April 09, 2018

Overview

The NetFlow Traffic Analyzer (NTA) service is not working and the following error appears in the NTA Business Layer:

ERROR SolarWinds.Orion.NetFlow.Service.Program - NetFlowService will be abnormally terminated - Unhandled exception.

System.IO.FileLoadException: Could not load file or assembly file://D:\Program Files (86x)\SolarWinds\Orion\NetFlowTrafficAnalysis\SolarWinds.NetFlow.Fastbit.Server.dll or one of its dependencies. Operation is not supported.

The path could vary, depending on the installed location.

Environment

  • NTA 4.0 through 4.1.1
  • NPM 11.0 through 11.5.2

Cause

Another application is restricting access to the SolarWinds.Netflow.FastBit.Server.dll file.

Resolution

  1. Go to C:\Program Files (x86)\SolarWinds\Orion\NetFlowTrafficAnalysis\ and locate the SolarWinds.Netflow.FastBit.Server.dll file.

    The path could vary, depending on the installed location.

  2. Right-click SolarWinds.Netflow.FastBit.Server.dll and select Unblock.

 

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