Network Performance Monitor

NPM HTTP 500 error when opening the Web Console

This article describes the issue when you receive a blank page and an HTTP 500 error when trying to open the Web Console.

First published date

10/11/2018 3:21 PM

Last published date

2/24/2025 7:50 PM

Overview

Here are three possible solutions to address HTTP 500 errors.

Product section

Network Performance Monitor

Cause

This issue can occur because the IIS Application Pool is not running correctly, or because of permission issues related to the Orion site files.

Resolution

Resolution 1

Open IIS Manager on the Primary Orion Server.
Click Websites.
Stop the SolarWinds NetPerfMon Website.
Go to Application Pools, and stop the SolarWinds Orion Application Pool.
Restart the SolarWinds Orion Application Pool.
Go back to Websites, and start the SolarWinds NetPerfMon Website.

Resolution 2

Check if all Orion services are running. If not, see step 2.
Check if the database connection between the Application and database servers is ok. If not fix it first
Restart Orion services

Resolution 3

Run the Orion Permission Checker
Fix any permissions that failed here, especially if they point to C:\inetpub\solarwinds
Restart services with Orion Service Manager
Try to access the SolarWinds Web Console

Resolution 4

Uninstall IIS using Server Manager
Restart the server and reinstall IIS
Rebuild the Orion Website
Re-run Configuration Wizard

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.