If you want to remove duplicate PST files without any errors. Then I can suggest one software so you can use it easily. SameTools Outlook Duplicate PTS Remover; it has even made a demo version of the software available for free. This way, you can try all of the features of the tool. It scans duplicate PST files and removes them without installing any application. Remove duplicate PST files without the risk of having access to your information. It is literally the least risky way to see how automated duplicate removal of PST files works and the productivity that can come with it.

Visit here: https://www.sametools.com/duplicate/pst/