Submit a ticketCall us

Get a crash course on Network Monitoring delivered right to your inbox
This free 7-day email course provides a primer to the philosophy, theory, and fundamental concepts involved in IT monitoring. Lessons will explain not only how to perform various monitoring tasks, but why and when you should use them. Sign up now.

Home > Success Center > Network Performance Monitor (NPM) > Method not found: 'System.Data.Entity.ModelConfiguration.Configuration.PrimitivePropertyConfigurationPage

Method not found: 'System.Data.Entity.ModelConfiguration.Configuration.PrimitivePropertyConfigurationPage

Created by Tiarnan Stacke, last modified by Steven Bansil_ret on Jul 22, 2016

Views: 166 Votes: 1 Revisions: 2

Updated: July 22, 2016


When attempting an upgrade of NPM, the following error appears in the Configuration Wizard:

Method not found: 'System.Data.Entity.ModelConfiguration.Configuration.PrimitivePropertyConfiguration


NPM version 12



The cause of this is a number of files in the Orion Installation Directory didn't get correctly upgraded.



  1. Open the installation directory (default C:\Program Files (x86)\Solarwinds\Orion).
  2. Remove the files EntityFramework.dll and EntityFramework.SqlServer.dll. Back them up to a location outside of Program Files.
  3. Run > appwiz.cpl.
  4. Select Solarwinds Orion Core Services 2016.1.
  5. Repair and run through the Configuration Wizard.



Last modified
22:08, 21 Jul 2016