The easiest method to resolve the QuickBooks error 3371 is to run the QuickBooks tool hub. Download the QB tool hub from Intuit's official website. Double-click the download file and agree to the T&C to install it. Double-click on the tool hub icon to launch it. Now, Select Installation issues. Next, select the option 3371 Error Fix and click ok. Once the process ends, launch the QuickBooks desktop and open the data file.