Change CTRL+ENTER shortcut behavior: registry value ctrlentersendsUserHKCU\software\policies\microsoft\office\16.0\outlook\preferences

Policy ID: L_Changectrlentershortcutbehavior
Scope: User Configuration
Supported on: At least Windows Server 2008 R2 or Windows 7
Source: Microsoft 365 Apps / Office Administrative Templates (version 5568.1000)
Category: Microsoft Outlook 2016 › Outlook Options › Preferences › E-mail Options

Registry

ctrlentersends

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\outlook\preferences Current key

Enabled value: Depends on the option value
Element: -

Options
Item	Stored value
CTRL+Enter is not a shortcut for sending a message	0
CTRL+Enter is a shortcut for sending a message	1
CTRL+Enter displays a prompt	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\preferences]

; Options (use only one)
; CTRL+Enter is not a shortcut for sending a message
"ctrlentersends"=dword:00000000
; CTRL+Enter is a shortcut for sending a message
"ctrlentersends"=dword:00000001
; CTRL+Enter displays a prompt
"ctrlentersends"=dword:00000002

CMD

:: Options (use only one)

:: CTRL+Enter is not a shortcut for sending a message
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\preferences" /v "ctrlentersends" /t REG_DWORD /d 0 /f
:: CTRL+Enter is a shortcut for sending a message
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\preferences" /v "ctrlentersends" /t REG_DWORD /d 1 /f
:: CTRL+Enter displays a prompt
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\preferences" /v "ctrlentersends" /t REG_DWORD /d 2 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\preferences' -Force | Out-Null

# Options (use only one)
# CTRL+Enter is not a shortcut for sending a message
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\preferences' -Name 'ctrlentersends' -PropertyType DWord -Value 0 -Force | Out-Null
# CTRL+Enter is a shortcut for sending a message
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\preferences' -Name 'ctrlentersends' -PropertyType DWord -Value 1 -Force | Out-Null
# CTRL+Enter displays a prompt
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\preferences' -Name 'ctrlentersends' -PropertyType DWord -Value 2 -Force | Out-Null