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HubSpot Sales for Outlook install error: 'Value does not fall within the expected range'

Last updated: January 29, 2024

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You may encounter the following error messages when attempting to install the HubSpot Sales Outlook desktop add-in:

  • Value does not fall within the expected range error message.
  • Access is denied.
  • Referenced assembly is not installed on your system.
  • The application binding data format is invalid.
  • [VSTOInstaller.exe] The solution could not be installed.

To resolve this error:

  • Copy and paste %localappdata% into your Start menu in Windows and press Enter.
  • Navigate to the Apps folder and delete the 2.0 folder. 

Please note: if you encounter an error message that the folder or file(s) are currently in use when you attempt to delete them, close all instances of Outlook and HubSpot for Windows. Press Ctrl + Alt + Delete on your keyboard and click Task Manager. Ensure you are in the Processes tab, then locate and right-click the SidekickTrayWPF process and click End Task. Then, attempt to delete the folder or file(s) again.

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