An internal QuickBooks error occurred while trying to access the QuickBooks company data file

During the customer portion of the financial exchange, you see the error:

An internal QuickBooks error occurred while trying to access the QuickBooks company data file

For best results, perform the solutions in the order shown.

Solution 1: Verify QuickBooks Desktop file's data integrity

1. From the QuickBooks Desktop File menu, select Utilities and click Verify Data.
2. When prompted, perform a rebuild of the file. Take note if you encounter any errors after rebuilding the file.
3. Try doing a financial exchange again. If the issue still occurs, proceed to solution 2.

Solution 2: Remove Point of Sale from the Integrated Applications list

1. In QuickBooks Desktop:
   1. From the Edit menu, click Preferences.
   2. On the left pane, choose Integrated Applications then go to the Company Preferences tab.
   3. Select Point of Sale from the list and click Remove > OK.
2. In QuickBooks Point of Sale:
   1. From the File menu, select Preferences then click Company.
   2. In the Company Preferences window, click Financial.
   3. You should see a box that displays establishing QB connection.
   4. When the box disappears, the connection has been successfully established. If there are issues, follow the onscreen instructions on the connection wizard.
3. Perform a financial exchange and check for errors. If the issue persists, try solution 3.

Solution 3: Toggle summarized/detailed exchange preference

1. In QuickBooks Point of Sale Desktop:
   1. From the File menu, select Preferences then click Company.
   2. In the Company Preferences window, click Financial.
   3. If send receipts and vouchers with is set to Detailed item descriptions, change it to Summarized item totals. If it is set to Summarized, change it to Detailed. Click Save.
   4. Go back to the preference and change it back to the original setting then click Save.
2. Perform a financial exchange and check for errors.