This error occurs when the accounting software is disconnected from the path where the QuickBooks file is stored. You may also experience the company file error not found in QuickBooks, regardless of whether you intentionally deleted the company file from the system or not. Let's first know a few things why QuickBooks does not open the company file. If you want to resolve QuickBooks Company File Not Found errors instantly, you can contact us at (855)-948-3651 for free business support.