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Home > Success Center > Netflow Traffic Analyzer (NTA) > The type or namespace 'NetFlow' does not exist in the namespace 'SolarWinds.Orion'

The type or namespace 'NetFlow' does not exist in the namespace 'SolarWinds.Orion'

Created by Con Finucane, last modified by MindTouch on Jun 23, 2016

Views: 14 Votes: 0 Revisions: 3


NTA is not loading on the Web Console and returns the following error:

ERROR:<ASP.global_asax - Application_Error: Inner exception
System.Web.HttpCompileException (0x80004005): c:\Inetpub\SolarWinds\Orion\TrafficAnalysis\Utils\FilterListItem.ascx.cs(7): error CS0234: The type or namespace name 'NetFlow' does not exist in the namespace 'SolarWinds.Orion' (are you missing an assembly reference?)>



  • NTA 4.01
  • NPM 11.5 and later


This is a bug in NTA 4.01 and NPM 11.5.x. 


Install NTA service release 4.0.2 or higher, where this bug has been addressed.



Last modified
20:59, 22 Jun 2016