QuickBooks Error Code PS077 appears when payroll updates cannot be downloaded or installed. Damaged payroll files, problems with your QuickBooks installation, or inaccurate or erroneous billing information are the most common causes of this error. In order to assure seamless payroll processing and updates, fixing it entails confirming billing information, upgrading QuickBooks to the most recent version, and fixing any corrupted program files. For immediate assistance, please contact our QuickBooks Experts Team at 1.855.738.2784.