Softaken PST Duplicate Remover it can remove a lot of duplicate PST files without errors. The app will find and remove duplicate PST files for you without downloading any software. This tool clicking through to find and view the duplicate PST files. The app can work on any version of Windows that is in the market now -11, 10, 8.1, 8, 7, and it supports formats other than Windows as well, such as ANSI and UNICODE