Yes, you can split ANSI PST files to Unicode PST format using some specialized PST management applications. Older versions of Outlook employ ANSI PST files with a storage limit of about 2 GB which sometimes leads to corruption and performance difficulties. Fortunately, you can split large ANSI PST files into small Unicode PST files by using modern solutions like DataVare Outlook PST Split Expert Software that supports the latest versions of Outlook. Unicode PST format has substantially greater file size, higher performance and much better data stability. The software also keeps the email, attachments, contacts and folder hierarchy during the converting and splitting process. Microsoft also says that Unicode PST files are the default format in newer versions of Outlook because they can hold more data and handle data in multiple languages.
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