Datto Autotask PSA: QuickBooks Desktop Error: "Error -2147220456"



When transferring invoices from Autotask to Quickbooks Desktop, you receive the following error:

"Attempt to communicate with QuickBooks failed. Error -2147220456 
This application has not accessed this QuickBooks company data file before. The QuickBooks administrator must grant an application permission to access a QuickBooks company data file for the first time." 


  • Datto Autotask PSA
  • Intuit QuickBooks Desktop


This error occurs when the user no longer has the Autotask Electronic Transfer file inside of QuickBooks.


  1. Log Into QuickBooks as Admin in Single-User mode.
  2. Transfer an invoice from Autotask. You will see a prompt for QuickBooks asking if the integration is allowed to access the file.
  3. Grant permission. You should now be able to configure as needed.

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