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 > Netflow Traffic Analyzer (NTA) > 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 on Mar 10, 2017

Views: 31 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
20:05, 9 Mar 2017

Tags

Classifications

Public