QuickBooks Error PS036 is a payroll update error that can appear when QuickBooks Desktop has difficulty verifying your payroll subscription or downloading the latest payroll tax table. It may be related to an inactive subscription, outdated QuickBooks software, incorrect billing information, damaged update files, or connectivity problems. To address the issue, verify your payroll subscription, update QuickBooks Desktop, confirm your account details, and retry the payroll update. If PS036 continues to occur, call +1(866)-513-4656 for assistance with payroll update issues.