Network Management

Installation failed: SolarWinds Platform - The installation source for this product is not available. Verify that the source exists and that you can access it. Some installation source files are missing.

This article provides information on resolving the error Installation failed: SolarWinds Platform - The installation source for this product is not available. Verify that the source exists and that you can access it. Some installation source files are missing when installing SolarWinds.

First published date

2/5/2026 9:51 AM

Last published date

2/6/2026 1:53 AM

Overview

Installation failed: SolarWinds Platform - The installation source for this product is not available. Verify that the source exists and that you can access it. Some installation source files are missing when installing SolarWinds using the offline installer.

Product section

Network Performance Monitor

Cause

Remnants of a previous SolarWinds Platform install are in the registry and list of installed programs, interfering with the installation.

Resolution

NOTE:
Before making any changes, please make sure you have a recent backup of the database, a snapshot of the VM, or a restore point of the physical server.
Work with your DBA for any database-related concerns.

1.From the affected polling engine, go to the Control Panel.

2. Make sure that there are no remnants of any SolarWinds files.

3. Install the Observability.OrionInstaller.msi file. By default, this is in C:\ProgramData\SolarWinds\Installers, or you can use the msi file from the Subinstallers folder from the Offline Installer. NOTE: Make sure that you are installing the same version.

4. You might get an error when running the Observability.OrionInstaller.msi file.

Invalid Observability Configuration value, Set INSTALLTYPE on the command line to one of the following: 'FULL', 'POLLER', 'FREE', or 'WEB CONSOLE'.

5. If you see this error, go to the registry path HKLM\SOFTWARE\Wow6432Node\SolarWinds\Orion\Core.

6. Add a binary string with the following: Configuration = POLLER.

7. Once the SolarWinds Platform has been installed, you will need to uninstall it via the Command Prompt or use the Microsoft Program Install and Uninstall .diagcab file.

8. Reboot the server after uninstalling.

9. Once the server comes back up, start re-installing SolarWinds, and it will now complete with no errors.

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.