How Can I Upgrade an ANSI PST File to Unicode Format?
I have an old PST file from Outlook 2002, and it seems to be in ANSI format with a 2GB size limit. Now I want to use it in Outlook 2016, but I heard I need to upgrade it to Unicode format first. Can someone guide me on how to safely upgrade this PST without losing emails?

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ElijahWilson commented
If you manage Outlook data files, specifically because ANSI PST are restricted to 2GB and Unicode PSTs allow up to 50GB or more, upgrading an ANSI PST file to a Unicode format is essential. WholeClear PST update program is an application that you can use to securely and effectively update your PST file.
Visit here: https://www.wholeclear.com/solutions/file-management.html
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Ella Ward commented
The best option for upgrading an old ANSI PST file to Unicode format. This tool is the best option if you have an old ANSI PST file and want to upgrade it to Unicode format. Softaken Upgrade PST Tool is a useful and reliable software that will easily upgrade old ANSI PST files of Microsoft Outlook to the new Unicode format.
Key Features:
Simple and user-friendly interface—can be used by anyone, even without any technical knowledge.
Rescue option: Concurrently upgrade one or more PST files.
All versions of Outlook are compatible—Outlook 2003, 2007, 2010, 2013, 2016, 2019, and 2021 are supported.Read More:- https://www.softaken.com/upgrade-pst-pro