“QuickBooks can’t read payroll setup files [Error PSO33]” message can appear when downloading payroll update or opening a company file. A damaged file in the CPS folder might be the cause of [Error PSO33]. You can get many solutions from QuickBooks Payroll Support Technical Support Center. To fix this error you need to update the QuickBooks payroll tax table. If it does not resolve this error, go to ‘C:\Program Files\Intuit\QuickBooks 20nn\Components\Payroll\CPS’. Rename the CPS folder CPSOLD and update the QuickBooks payroll tax table. For more detailed information, visit https://payrollsupportquickbooks.com; and in case you find any difficulty, you can dial a toll-free QuickBooks technical support number.