WinPST Ansi PST to Unicode Converter is simple yet powerful PST conversion tool to convert Ansi PST to Unicode PST and Vice versa. Software efficiently performs:

Convert ANSI PST file to Unicode PST file:
Microsoft Outlook 2003, 2007 and 2010 have a larger overall size limit 20 gigabytes (GB) for the personal folders (.pst) file than the .pst files that are in the earlier versions of Microsoft Outlook such as Microsoft Outlook 2000 & XP. In Outlook 2002 and earlier, the .pst files are in the American National Standards Institute (ANSI) format, and the overall size has a limit of 2 gigabytes (GB) only.

Unicode PST file has the overall size limit of 20 GB. Just to avoid corruption due to exceeding the size limit of 2 GB imposed on ANSI PST file, you need to convert your ANSI PST file to Unicode PST file to enhance the size limit to 20 GB.

Convert Unicode PST file to ANSI PST file :
Suppose you have created your PST file in Microsoft Outlook 2003, 2007 and 2010 and you want to open it in Outlook 2002 and in its earlier version.

Outlook 2000/2002 will not allow you to open the PST file and results in error as "Properties for this information service must be defined prior to use".

To open the Unicode PST files in Outlook 2000/2002, you need to downgrade or convert the Unicode PST to ANSI PST file using WinPST Ansi PST to Unicode Converter tool.