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Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA - Knowledgebase Articles > NTA installation error: The features are already installed on the machine

NTA installation error: The features are already installed on the machine


The following error is displayed when installing SolarWinds Orion Netflow Traffic Analyzer 4.1 on an additional web server:

The features are already installed on the machine.  Would you like to perform repair installation?  This option repairs or reinstalls damaged or missing components.


NTA 4.1 and later


Stale registry keys from a previous installation prevent the installation from initializing properly.


  1. Reset the configuration wizard to run completely. You can request help from support to perform this task.
  2. Create a backup of the following registry in Regedit:
    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\SolarWinds\Orion\Netflow Traffic Analyzer
  3. Delete the key.
    The installer now initializes properly and completes the operation.


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.

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