How to fix: "QBWC1039: This application has not accessed this QuickBooks company data file before"
This guide is provided by Conductor, the service that powers the QuickBooks Desktop integration for many business tools, including the one that sent you here.
When setting up the QuickBooks Desktop integration, you might encounter the following error after attempting to open the downloaded config file:
This error occurs because you did not correctly sign in to QuickBooks Desktop using the built-in “Admin” user before starting the setup process. Even if your current user has administrative privileges, the username must specifically be “Admin” - this is a QuickBooks Desktop requirement that cannot be bypassed.
Solution: Sign in as the “Admin” user
Sign out of your current QuickBooks Desktop user account
Sign in using the QuickBooks built-in "Admin" user account
Sign in using the QuickBooks built-in “Admin” user. The username must be exactly “Admin” - not any other user, even if it has administrative privileges.
Signing in as the “Admin” user is only needed for this one-time setup process. After setup is complete, you can return to using your regular QuickBooks Desktop user account.
Re-open the QuickBooks config file
Re-open the QuickBooks config file again from your Downloads folder (it has the file extension .qwc). This is the file you just downloaded from the QuickBooks Desktop setup guide. Now, QuickBooks Desktop should no longer show the error shown above and you can continue setting up the connection.
Continue where you left off in the QuickBooks Desktop setup guide
After you complete the setup process, you can return to using your regular QuickBooks Desktop user account.
If this guide did not resolve your issue, please contact our support team at support@conductor.is.