Submit a ticketCall us

WebinarWebinar: A checklist for planning your Network Performance Monitor (NPM) upgrade

Are you ready for your next upgrade? To help you plan smoothly, join this webcast to learn more about, SolarWinds® Orion® Installer, SolarWinds Upgrade Advisor, Upgrades Guides, Training Videos, and other resources available. We’ll share key upgrade planning considerations, lessons learned from customers with practical advice from SolarWinds Product Experts. We’ll also give practical tips to identify the estimated time needed and resources, how to prepare the business and IT staff for changes, ways to plan for required system changes, and more.

Register now.

Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA - Knowledgebase Articles > ERROR SolarWinds.Orion.NetFlow.Service.Program - Unhandled exception: Message: Invalid class

ERROR SolarWinds.Orion.NetFlow.Service.Program - Unhandled exception: Message: Invalid class

Table of contents
Created by Con Finucane, last modified by Rodim Suarez_ret on Mar 10, 2017

Views: 278 Votes: 1 Revisions: 3

Updated March 10, 2017

Overview

Error in the Netflow Service logs

ERROR SolarWinds.Orion.NetFlow.Service.Program - Unhandled exception: Message: Invalid class

The particular problem is related to FastBit startup. The service is trying to check the available RAM memory via WMI and the query fails causing the service to crash.

Environment

All NTA versions

Detail

Please advise the customer to rebuild the WMI repository. It is a mandatory step to fix the issue, you may  lose some custom WMI providers if you use any.

Detailed instructions on how to fix the WMI repository can be found here: https://blogs.technet.microsoft.com/...mi-repository/

 

Disclaimer: Please note, any content posted herein is provided as a suggestion or recommendation to you for your internal use. This is not part of the SolarWinds software or documentation that you purchased from SolarWinds, and the information set forth herein may come from third parties. Your organization should internally review and assess to what extent, if any, such custom scripts or recommendations will be incorporated into your environment.  You elect to use third party content at your own risk, and you will be solely responsible for the incorporation of the same, if any.

 

Last modified

Tags

Classifications

Public