Value range (in Hex) is 0x00000001 – 0x0000C800 when entering the value in Decimal, use MB. In Outlook 2010 and Outlook 2013, the default is 50 GB in Outlook 20, it's 20 GB.
MaxLargeFileSize - this value sets the maximum size of a Unicode pst or ost. HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\x.0\Outlook\PSTĪs always, replace xx with your version of Outlook: 16 for Outlook 2016, 15 for Outlook 2013, 14 for Outlook 2010, 12 for Outlook 2007, or 11 for Outlook 2003. Note that the maximum file size for ANSI pst is 1.9 GB.Īdministrators can control it using group policy by editing the following key. For example, 1 GB = 1073741824 Decimal (a MB or bytes converter is below). Maximum Unicode pst/ost file size is 1TB or 1024 GB.įor ANSI format pst file, you need to create DWORD values namedĮnter a decimal value in Bytes. For example, 100 GB = 102400 Decimal (a GB to MB or bytes converter is below).
Browse to HKEY_CURRENT_USER\Software\Microsoft\Office\xx.0\Outlook\PST (replacing xx with your version of Outlook: 16 for Outlook 2016, 15 for Outlook 2013, 14 for Outlook 2010, 12 for Outlook 2007, or 11 for Outlook 2003.) Unicode pst formatįor Unicode pst and ost files, create DWORD values ofĮnter a decimal value in MB.
