Add properties to attachments to enable Reply with Changes: registry value L_AddpropertiestoattachmentstoenableReplywithChanges (preferences)UserHKCU\software\policies\microsoft\office\16.0\outlook\preferences

Policy ID: L_AddpropertiestoattachmentstoenableReplywithChanges
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 › Advanced E-mail Options › When sending a message

Registry

adhocreviewbehavior

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\outlook\options\mail

Checked: 0
Unchecked: 1
Element: Add properties to attachments to enable Reply with Changes
Value type: REG_DWORD

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\options\mail]

; Options (use only one)
; Checked
"adhocreviewbehavior"=dword:00000000
; Unchecked
"adhocreviewbehavior"=dword:00000001

CMD

:: Options (use only one)

:: Checked
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\mail" /v "adhocreviewbehavior" /t REG_DWORD /d 0 /f
:: Unchecked
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options\mail" /v "adhocreviewbehavior" /t REG_DWORD /d 1 /f

PowerShell

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

# Options (use only one)
# Checked
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\mail' -Name 'adhocreviewbehavior' -PropertyType DWord -Value 0 -Force | Out-Null
# Unchecked
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options\mail' -Name 'adhocreviewbehavior' -PropertyType DWord -Value 1 -Force | Out-Null