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HubSpot Sales for Outlook install error: 'an application with the same identity is already installed'

Last updated: May 24, 2018

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

Unable to install this application because an application with the same identity is already installed. 

To resolve this error: 

  • Delete all the contents in this folder.
  • Navigate to the Registry Editor by typing regedit in the Start menu and pressing Enter.
  • Click the > symbol next to HKEY_CURRENT_USER to expand the folder.
  • Expand Software > Microsoft > Office > Outlook > Add-Ins

  • Right-click the Sidekick folder and select Delete.

  • Collapse Add-Ins > Outlook > Office so you're back in the Microsoft folder.
  • Expand VSTA > Solutions.
  • Under Solutions, you'll see one or several folders. Click one to view a list of files in the right-hand pane of the window. 
  • Go through each folder under Solutions and find one in which the value in the Data column for the ProductName file is HubSpot Sales for Outlook. 
  • Delete the entire folder that contains the HubSpot Sales for Outlook ProductName file.  
  • Attempt to install the HubSpot Sales Outlook desktop add-in again.

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