If you want to remove duplicate items from Outlook PST files, then try the perfect tool like TrustVare Outlook Duplicate Remover. The tool scans Outlook files like emails, contacts, notes, tasks, calendar, etc, finds duplicate items and removes them wihtout affecting your important data. It can work with all Windows OS versions like 11, 10, 8.1, 8, and 7 without downloading any other application. It has a simple interface for non-technical users and they can try it without technical skills. It can provied a free demo version before purchasing it. This tool can provieds preview option before deleting duplicate Outlook PST files.