Make sure your QuickBooks is up to date and you have an active payroll subscription before attempting to fix the QuickBooks payroll update not working issue in QB Desktop. After restarting your PC, attempt the update once more. The update may be blocked by your firewall and internet connection, so check those settings. Make that the time and date settings on the machine are accurate. Utilize administrator mode to run QuickBooks. You might need to reset the QuickBooks update or get in touch with QuickBooks help if the problem continues. For payroll processing to be correct, regular updates are essential.