Your QuickBooks Payroll may not be working due to several common reasons, including an inactive or expired payroll subscription, outdated QuickBooks Desktop or payroll tax table, incorrect service key, or issues with your internet connection and system date/time settings. Payroll can also fail if essential QuickBooks services are not running, Windows updates are missing, or security software is blocking payroll updates. Data file damage or installation issues may further prevent payroll from functioning properly. If the problem continues and you need immediate assistance, call +1 (302) 205-4658 to speak with QuickBooks payroll support and get the issue resolved quickly.