To deal with QuickBooks Error 3371 Status Code, implement the suggested actions. The Window+R key should be pressed first on your keyboard. Following that, a window will open, and you must type C:ProgramDataIntuit|EntitlementClientv8 here. An Explorer tab will now appear in the window. Just remove the ecml file at that point. Furthermore, click with the right mouse button, and then choose erase. Close the window option right away, in addition. Run QuickBooks after finishing this step, and then register the product once more.