The PST Upgrade Tool can convert Outlook 2003 to Outlook 2000, and also convert between ANSI and Unicode PST file formats. It is a versatile software that serves both as a PST Upgrade and PST Downgrade tool.

To fully understand the difference between Unicode and ANSI, it's important to know that ANSI represents the older versions of Outlook, including Outlook 97, 2000, and Outlook 2002. On the other hand, Unicode represents the upgraded versions of Outlook, including Outlook 2003, 2007, and Outlook 2010 (32-bit). This powerful tool allows you to open your Unicode PST file while showing error "Properties for this information service must be defined prior to use," and convert it to an ANSI PST file.
Moreover, ANSI Outlook PST file has a 2GB limitation while Unicode supports up to 20GB. With this Upgrade PST tool, you can increase your PST file size limit. You can test the features of our software with the demo version that is available for free. After a satisfactory trial, you can purchase the full license of this software for an affordable price of only $49.
In summary, the Outlook PST conversion tool allows you to seamlessly convert your Outlook 2003 to 2000 PST, convert Unicode PST to ANSI PST, and increase your PST file size limit. Our software is available at an affordable price and is sure to make your conversion process smooth and efficient. For more info, please visit our website.
Version 2.5: N/A