Turn on logging for all conflicts: registry value enableconflictloggingUserHKCU\software\policies\microsoft\office\16.0\outlook\options

Policy ID: L_TurnOnLoggingForAllConflicts
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 › Other › Advanced

Registry

enableconflictlogging

REG_DWORDUser

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

Enabled value: Depends on the option value
Element: -

Options
Item	Stored value
No conflicts are logged (default)	0
All conflicts logged	1
Unresolved conflicts logged only	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Options (use only one)
; No conflicts are logged (default)
"enableconflictlogging"=dword:00000000
; All conflicts logged
"enableconflictlogging"=dword:00000001
; Unresolved conflicts logged only
"enableconflictlogging"=dword:00000002

CMD

:: Options (use only one)

:: No conflicts are logged (default)
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options" /v "enableconflictlogging" /t REG_DWORD /d 0 /f
:: All conflicts logged
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options" /v "enableconflictlogging" /t REG_DWORD /d 1 /f
:: Unresolved conflicts logged only
reg add "HKCU\software\policies\microsoft\office\16.0\outlook\options" /v "enableconflictlogging" /t REG_DWORD /d 2 /f

PowerShell

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

# Options (use only one)
# No conflicts are logged (default)
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options' -Name 'enableconflictlogging' -PropertyType DWord -Value 0 -Force | Out-Null
# All conflicts logged
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options' -Name 'enableconflictlogging' -PropertyType DWord -Value 1 -Force | Out-Null
# Unresolved conflicts logged only
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\options' -Name 'enableconflictlogging' -PropertyType DWord -Value 2 -Force | Out-Null