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The old format of PST files, now formally called "Outlook 97-2002 Personal Folders File" and usually known as ANSI PST, has the limitation of up to 65,000 items per folder and the overall PST size of two GB.
Outlook 2003 and 2007 introduced a new file format for the message store of Outlook. They support Unicode formatting and have no limitation in the number of items per folder or in the size of the file. These files are commonly known as Unicode PST files.
Unicode PST provides multi language support. You can convert your emails into several languages and the recipient can read the message in same language.
Because of the large file size support, it is highly recommended that you upgrade to the Unicode PST format. On the other hand, Microsoft does not offer a tool that upgrades the PST, other than what is built in to Outlook: Import/Export.
Sadly there is no good way to convert or upgrade the PST files automatically from ANSI format to Unicode format. Also upgrading the Outlook file version doesn't change the format of the PST files.
So, if you have decided to convert ANSI PST to Unicode PST, you need to convert your PST files manually. Sometimes, the user tries to access ANSI PST files, after upgrading to Outlook 2003 and 2007, without migrating. It can cause the PST corruption.
The ANSI PST can also get damaged if you have a large size PST file and trying to convert it into Unicode PST. While moving the file in new PST, the Outlook may stop responding then you may have to halt the process. It can cause PST corruption.
If any of the above situations occurs, the data stored on the form of PST file can become inaccessible. It is the worst case scenario that an individual user or an organization can face. The damaged PST file may contain important emails, contacts, notes, schedule, calendar entries and many other.
In such circumstances, PST recovery becomes is the need of hour. PST recovery is practicable via PST recovery software. These software are fairly easy to use and can work in most of the situations of PST corruption. The only thing that you have to do is just to opt for a good PST recovery software and scan your PST file.
Stellar Phoenix Outlook PST Repair is the key PST recovery software. This PST recovery software is developed according to the highest standards of the data recovery industry. This software is reasonably very easy and fast to use and can perform PST recovery in most of the cases of PST corruption.
This PST recovery software employs the extremely powerful scanning algorithms to perform thorough scan of the PST file and recover PST file in original format. This PST recovery software can be used with all file versions of Microsoft Outlook and PST recovery can be performed for all of the Outlook items.
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