Permanently remove all deleted content from PST and OST files

By default, a small percentage of deleted data is not overwritten in Outlook PST and OST files. By enabling this setting, all deleted data in PST and OST files is overwritten when users exit Outlook.

Supported on: At least Windows Vista

Registry Hive	HKEY_CURRENT_USER
Registry Path	Software\Policies\Microsoft\Office\12.0\Outlook\PST
Value Name	PSTNullFreeOnClose
Value Type	REG_DWORD
Enabled Value	1
Disabled Value	0

outlk12.admx

Administrative Templates (Computers)

Calendar Printing Assistant for Microsoft Office Outlook 2007 (Machine)
- Directory where all calendar designs are located
- Directory where all templates are located
Microsoft Office 2007 system (machine)
- Miscellaneous
  - Document Inspector
  - File Previewing
- Security Settings
Microsoft Office Excel 2007 (Machine)
- Converters
  - Turn on an external converter as the default for a file extension
- Miscellaneous
  - Open Hyperlinks to documents in Windows Internet Explorer
Microsoft Office InfoPath 2007 (machine)
- Security
Microsoft Office PowerPoint 2007 (Machine)
- Miscellaneous
  - Open Hyperlinks to documents in Windows Internet Explorer
Microsoft Office Visio 2007 (machine)
- Open Hyperlinks to documents in Windows Internet Explorer
Microsoft Office Word 2007 (Machine)
- Converters
  - Turn on an external converter as the default for a file extension policy for Microsoft Office Word
- Miscellaneous
  - Open Hyperlinks to documents in Windows Internet Explorer

Administrative Templates (Users)

Calendar Printing Assistant for Microsoft Office Outlook 2007
Microsoft Office 2007 system
Microsoft Office Access 2007
- Application Settings
  - General
    - Default database folder
    - Number of documents in the Recent Documents list
  - International
  - Security
    - Trust Center
  - Web Options...
    - General
- Customizable Error Messages
  - List of error messages to customize
- Disable Items in User Interface
  - Custom
    - Disable commands
    - Disable shortcut keys
  - Predefined
    - Disable commands
    - Disable shortcut keys
- Miscellaneous
- Tools | Security
  - Workgroup Administrator...
    - Path to shared Workgroup information file for secured MDB files
  - Modal Trust Decision Only
Microsoft Office Excel 2007
Microsoft Office Groove 2007
- Groove Manager
  - Groove Manager Server Name
- Groove Account Configuration Code Required
Microsoft Office InfoPath 2007
Microsoft Office InterConnect 2007
- General Setting
  - Communicator Presence
  - Search Keyword MRU
- Internet Connection Setting
- Security Setting
  - Allow the intranet users to send/receive activities
  - Show (or not show) the list of certificates
Microsoft Office OneNote 2007
Microsoft Office Outlook 2007
Microsoft Office PowerPoint 2007
- Block file formats
  - Open
  - Save
- Customizable Error Messages
  - List of error messages to customize
- Disable Items in User Interface
  - Custom
    - Disable commands
    - Disable shortcut keys
  - Predefined
- Miscellaneous
  - Disable Slide Update
- New Presentation Links
- PowerPoint Options
Microsoft Office Project 2007
- Miscellaneous
  - Most Recently Used Template List Length
- Security
  - Tools | Macro
    - Security Level
  - Previous-version file formats
- Tools | Local Project Cache
  - Local Project Cache Location
  - Local Project Cache Size Limit in MB
- Tools | Options...
  - Calculation
    - Calculation options for 'Project1'
    - Calculation options for Microsoft Office Project
      - Automatic Calculation
      - Calculate all open projects
  - Calendar
  - Edit
    - Edit options for Microsoft Office Project
    - Hyperlink appearance in 'Project1'
    - View options for time units in 'Project1'
      - Add space before label
      - Days
      - Hours
      - Minutes
      - Months
      - Weeks
      - Years
  - General
    - General options for 'Project1'
    - General options for Microsoft Office Project
    - Undo Levels
  - Interface
    - Project Guide settings for 'Project1'
      - Project Guide Content
      - Project Guide Functionality and Layout page
    - Project Guide settings
      - Display Project Guide
    - Show indicators and Option butons for
    - Disable Internal ID Matching
  - Save
    - Auto Save Options
    - File locations
      - Projects
      - User Templates
    - Save Microsoft Office Project files as
  - Schedule
    - Schedule options for Microsoft Office Project
      - Show assignment units as
      - Show scheduling messages
    - Scheduling options for 'Project1'
  - Security
    - Enable untrusted intranet zone access to Project server
  - View
    - Calendar Type
      - Calendar Type
    - Show
    - Date Format
    - Default Project Currency
    - Default View
    - Project Summary Task
Microsoft Office Publisher 2007
- Disable Items in User Interface
  - Custom
    - Disable commands
  - Predefined
    - Disable commands
- Format
  - Prompt user when reapplying a style
- Miscellaneous
- Security
- Spelling
  - Check spelling as you type
- Tools | Options...
Microsoft Office SharePoint Designer 2007
- Default Authoring Options
- Disable Items in User Interface
  - Custom
    - Disable commands
  - Predefined
    - Disable commands
- Downloading Framework Components
- Miscellaneous
  - Remote Website Properties
    - Disable Optimize HTML on publish checkbox
Microsoft Office Visio 2007
- Customizable Error Messages
  - List of error messages to customize
- Disable Items in User Interface
  - Custom
    - Disable commands
    - Disable shortcut keys
  - Predefined
    - Disable commands
    - Disable shortcut keys
- Miscellaneous
  - Email message for 'Send To' commands
- Tools | AutoCorrect Options...
  - AutoFormat as you type
- Tools | Options...
  - Advanced
    - Advanced options
    - Color settings
    - File Paths
      - Add-ons
      - Drawings
      - Favorites Stencil Name
      - Help
      - My Shapes
      - Start-up
      - Stencils
      - Templates
    - Freeform drawing
      - Precision
      - Smoothing:
    - Ink tool
      - Auto-create speed
  - General
    - Drawing window options
    - General options
      - Number of documents in the Recent Documents list
      - Undo levels
  - Save/Open
    - Language for file conversion
      - Language for file conversion
    - Save options
      - Prompt for document properties on first save
      - Save AutoRecover info
    - Warnings options
      - Show file open warnings
      - Show file save warnings
    - Save Visio files as
  - Security
    - Macro Security
    - Trust Center
  - Shape Search
    - Results
    - Search for:
    - Show Shape Search pane
  - Units
    - Default units
  - View
    - Display options
    - Show
    - Stencil spacing
      - Characters per line
      - Lines per master
    - Text quality
Microsoft Office Word 2007