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Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA - Knowledgebase Articles > Cannot install NTA 4.2.3 on additional polling engine or download file from primary polling engine

Cannot install NTA 4.2.3 on additional polling engine or download file from primary polling engine

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Updated September 24, 2018


Attempting to upgrade NTA 4.2.3 on an additional polling engine (APE) returns the following error in the installer logs:


2018-06-29 16:59:38,236 [33] DEBUG (null) SolarWinds.Administration.InstallExecutor.Executors.DownloadExecutor - Starting download of file in version for install executor
2018-06-29 16:59:38,236 [33] DEBUG (null) SolarWinds.Administration.Downloader.ChecksumVerifier - Can't compute checksum for file C:\ProgramData\SolarWinds\Installers\SolarWinds-Orion-NTA.msi because file does not exist

2018-07-02 14:04:33,670 [31] ERROR (null) SolarWinds.Administration.InstallExecutor.InstallMessages.InstallMessageNotifier - Install Message|{"Message":"Can't download file","EventType":"Error","ExecutorType":"Downloader","Arguments":{"filename":""}}
2018-07-02 14:04:33,670 [31] DEBUG (null) SolarWinds.Administration.InstallExecutor.InstallationManager - error message received from Downloader
2018-07-02 14:04:33,671 [31] ERROR (null) SolarWinds.Administration.InstallExecutor.Executors.DownloadExecutor - Can't download file


  • NTA 4.2.3 and NPM 12.3


  1. Download the file manually using an internet browser with the URL given on the log files:
  2. Copy and update the files under c:\ProgramData\Solarwinds\Orion\Installers on the primary polling engine.

    If the location above does not exist, try copying the files to c:\ProgramData\Solarwinds\Installers.

  3. Re-run the scalability installer on the additional polling engine.
    The installation should complete successfully.




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