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Even though an item may have been deleted in Outlook some remnants of it could still remain accessible in the raw data files. This setting causes Outlook 2000 and 2002 (XP) to completely remove all deleted data when it is shut down.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'PSTNullFreeOnClose' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.

Note: This feature was first made available in Microsoft Office 2000 Service Release 1 (SR-1).

		(Default)	REG_SZ	(value not set)
		PSTNullFreeOnClose	REG_DWORD	0x00000001 (1)

	HKEY_CURRENT_USER\Software\Microsoft\Office\[office version]\Outlook\PST

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.