Do not automatically sign replies

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKCU software\policies\microsoft\office\16.0\outlook\security

Value name: nosignonreply

Enabled: nosignonreply = 1

Disabled: nosignonreply = 0

Description

This policy setting allows you to specify whether replies will be automatically signed. If you enable this policy setting, the option to respond automatically to a signed message with a signed response will be overridden, and an unsigned response will be the default reply to a signed message. If you disable or do not configure this policy setting, a signed response will be the default reply to a signed message.