Policy
Trust legacy VBA signatures
This policy setting allows you to control how Office loads and verifies legacy Visual Basic for Applications (VBA) signatures. If you enable or do not configure this policy setting, Office applications can load and verify legacy VBA signatures. If you disable this policy setting, Office applications can’t load or verify legacy VBA signatures. They can only load and verify agile VBA signatures.
9de1e7a41bae L_TrustLegacySignature Registry
Copy registry mappings
HKCU\software\policies\microsoft\vba\security\trustlegacysignature (enabled) = 1
HKCU\software\policies\microsoft\vba\security\trustlegacysignature (disabled) = 0 Policy notes
This policy setting allows you to control how Office loads and verifies legacy Visual Basic for Applications (VBA) signatures. If you enable or do not configure this policy setting, Office applications can load and verify legacy VBA signatures. If you disable this policy setting, Office applications can’t load or verify legacy VBA signatures. They can only load and verify agile VBA signatures.