Secure mode and Certificate-based Digital Signature validation in native PDF reader

Supported on: Microsoft Edge version 100, Windows 7 or later

Registry

HKLM Software\Policies\Microsoft\Edge

HKCU Software\Policies\Microsoft\Edge

Value name: PDFSecureMode

Enabled: PDFSecureMode = 1

Disabled: PDFSecureMode = 0

Description

The policy enables Digital Signature validation for PDF files in a secure environment, which shows the correct validation status of the signatures. If you enable this policy, PDF files with Certificate-based digital signatures are opened with an option to view and verify the validity of the signatures with high security. If you disable or don't configure this policy, the capability to view and verify the signature isn't available.