Configure trusted add-ins: registry value L_SetTrustedAddinsUserHKCU\software\policies\microsoft\office\16.0\outlook\security\trustedaddins

Policy ID: L_SetTrustedAddins
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 › Security › Security Form Settings › Programmatic Security › Trusted Add-ins

Registry

(list values)

REG_SZUser

HKCU\software\policies\microsoft\office\16.0\outlook\security\trustedaddins Current key

Enabled value: Depends on the option value
Element: List of trusted add-ins and hashes
Value type: REG_SZ
Explicit value name: true

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\security\trustedaddins]
"<enter name>"="<enter value>"

CMD

reg add "HKCU\software\policies\microsoft\office\16.0\outlook\security\trustedaddins" /v "<enter name>" /t REG_SZ /d "<enter value>" /f

PowerShell

New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\security\trustedaddins' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\outlook\security\trustedaddins' -Name '<enter name>' -PropertyType String -Value '<enter value>' -Force | Out-Null