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Avalara Help Center

Why am I getting Error 1904 when installing AvaTax in QuickBooks Desktop?


While installing AvaTax, "Error 1904.Module Drive:\\pathway\AvalaraEventCallBack.exe failed to register" populated.




  • This is a Microsoft Windows error usually caused by the installation not being ran as administrator.
  • This can also be caused if you are trying to install the connector on a Server that doesn't have the actual QuickBooks exe installed on it.
  • Double check that QuickBooks exe is installed on the server before installing Avalara Avatax.
  • If you only have QuickBooks Database manager this will not work, you must install the actual QuickBooks exe as well.


  • Once you click "OK" on the error, the installation will say that it was successfully completed.
  • Next, locate "Subscribe.exe" in the pathway listed in the error
    • Right Click
    • Select "Run as Administrator"
  • Run QuickBooks as Administrator
  • Navigate to AvaTax Configuration (File>AvaTax>Configuration)
  • Select "Test Connection"