QuickBooks Payroll Update Error PS038 usually occurs when payroll updates are blocked by paychecks marked "Online to Send" or minor company file issues. To fix it, update QuickBooks Desktop, install the latest payroll tax table, review and correct any stuck paychecks, and run the Verify and Rebuild Data utility. These steps typically resolve the error and restore payroll updates. For expert support, call +1-866-513-4656.