Disable AutoPreview

Enabling this policy permanently disables the item preview. Users cannot turn it back on and the ribbon UI to change it is disabled.

Supported on: At least Windows 7
Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\15.0\outlook\preferences
Value Namedisableautopreview
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

outlk15.admx

Administrative Templates (Computers)

Administrative Templates (Users)