You can easily fix QuickBooks Error 6069 by verifying QuickBooks company file extension, follow the steps listed below: At first, you need to run the Windows File Manager and then move to the QuickBooks installation directory. Thereafter, find the company file by following the path i.e C-Users > Public > Documents > Intuit > QuickBooks- Company Files folder. Ensure that the QuickBooks data file has the file extension .”qbw.” If you find the file is on another extension, right-click on the file and click Rename option. You can now replace the file extension with the file extension named .qbw and save the file name. In the end, launch the QuickBooks data file in QuickBooks Desktop.