You've come to the right place if you need to break a large PST file into several parts. I was having a lot of issues with the PST file being too large, so I used this tool. Breaking large PST files into several parts using the original and more effective SameTools PST Split software is simple. Dividing Outlook PST, Unicode, and ANSI files into several parts is easy. This software works with every version of Windows, including Windows 11, 10, 8.1, 7, XP, Vista, and prior versions. The compatible Outlook versions are 2021, 2019, 2016, 2013, 2010, 2007, and previous iterations. Download the free demo version of the software to learn more about its features.