Saturday, February 2, 2019

Outlook Data Size increase

§  Outlook 2003
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\PST
§  Outlook 2007
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST
§  Outlook 2010
HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\PST
§  Outlook 2013
HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\PST
Outlook 2016
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST


§  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 before receiving a warning that the file is full. 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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