Software defects are errors or flaws that affect the performance, functionality, or usability of the software. To handle software defects using TQM, you need to establish a defect management system that defines roles, responsibilities, and procedures for detecting, reporting, tracking, resolving, and preventing defects. Additionally, quality control measures should be implemented to identify and eliminate defects before they reach the customer. Quality assurance measures should also be implemented to ensure the software development process follows the quality criteria and meets customer expectations. Furthermore, quality improvement measures such as root cause analysis and corrective actions should be taken to identify and eliminate sources and causes of defects, as well as prevent their recurrence. Finally, quality performance of the software and defect management system should be monitored and measured using quality indicators such as defect density, defect severity, defect resolution time, or customer satisfaction.