This setting controls whether Outlook users are allowed to send e-mail messages after they see an encryption warning.
If you enable this policy setting, encryption warning dialog boxes do not contain a Continue button, which means that users must cancel the sending operation entirely.
If you disable or do not configure this policy setting, if Outlook users see an encryption-related dialog box when attempting to send a message, they can choose to dismiss the warning and send the message anyway.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | software\policies\microsoft\office\16.0\outlook\security |
| Value Name | disablecontinueencryption |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |