Microsoft Outlook 2003 .PST file will not grow above 2 GB

Tags:
.PST files
Microsoft Outlook
Outlook 2003
I am running Microsoft Outlook 2003 and my .PST file does not grow above 2 GB. I have read the following Microsoft Knowledge Base articles: I tried creating a new .PST file and converting it to a Unicode formatted .PST file. Then I migrated my old .PST file to the new Unicode .PST file and I still cannot go above 2 GB. It is my understanding that Outlook 2003 supports Unicode file types, but, in my case, it is not working.

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It’s recommended that You should change PST files name as it reaches to 2GB . Very large PST files tend to corrupt much easier than smaller files. I would recommend splitting the file into a couple of smaller files. If facing problem to repair PST files download PST file recovery software.

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  • stephenlembert
    There has been a similar thread that covers this problem. You can have a look: http://itknowledgeexchange.techtarget.com/itanswers/how-to-increase-the-size-of-pst-file/
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  • Swati04
    Yes, Outlook 2003 do support UNICODE format and default limitation for same is 20 GB of PST file. But you can once check the enough space available in drive where you saved the PST file and also check the PST file size limitation from registry. You can change/increase the PST file size via registry. 

    1. Open the regedit.
    2.Goto HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\PST
    3. Here you must create and set 2 new DWORD values (note that these values are case sensitive);

    WarnLargeFileSize 
    Don’t set this higher than 4090445042 (decimal) or f3cf3cf2 (hexadecimal)
    MaxLargeFileSize 
    Don’t set this higher than 4294967295 (decimal) or ffffffff (hexadecimal)

    The first value is how many MB a user can write to a pst-file. The second value is how many MB the system can write to a pst-file. This difference has to be at least 5% since there is more written to a pst-file than just user data.
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