Resolve QuickBooks Printer Not Activated Error 20 is one of the commonly encountered issues, when the user tries to update the operating system to windows 10 or 7. This error restricts the user from printing or sending invoices and pay slips. It can be caused by various other application apart from QuickBooks. To help the user in fixing QuickBooks Error Code 20 issue, we have come up with the simple steps that can resolve the error in very less time.