Do not allow expired certificates when validating signatures

This policy setting allows you to configure Office 2016 applications to accept expired digital certificates during verification of digital signatures.

If you enable or do not configure this policy setting, Office 2016 applications display digital signatures created with expired certificates as invalid.

If you disable this policy setting, Office 2016 applications treat expired certificates as valid.

Supported on: At least Windows 7
Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\16.0\common\signatures
Value Nameignoreexpiredcert
Value TypeREG_DWORD
Enabled Value0
Disabled Value1

office16.admx

Administrative Templates (Computers)

Administrative Templates (Users)