Allow certificates signed using SHA-1 when issued by local trust anchors (deprecated)

DEPRECATED: This policy is deprecated. It is currently supported but will become obsolete in a future release.

When this setting is enabled, Microsoft Edge allows connections secured by SHA-1 signed certificates so long as the the certificate chains to a locally-installed root certificate and is otherwise valid.

Note that this policy depends on the operating system (OS) certificate verification stack allowing SHA-1 signatures. If an OS update changes the OS handling of SHA-1 certificates, this policy might no longer have effect. Further, this policy is intended as a temporary workaround to give enterprises more time to move away from SHA-1. This policy will be removed in Microsoft Edge 92 releasing in mid 2021.

If you don't set this policy or set it to false, or the SHA-1 certificate chains to a publicly trusted certificate root, then Microsoft Edge won't allow certificates signed by SHA-1.

This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain, Windows 10 Pro or Enterprise instances that enrolled for device management, or macOS instances that are that are managed via MDM or joined to a domain via MCX.

Supported on: Microsoft Edge version 85, Windows 7 or later

Registry PathSoftware\Policies\Microsoft\Edge
Value NameEnableSha1ForLocalAnchors
Enabled Value1
Disabled Value0


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