Install binaries signed by MD2 and MD4 signing technologies

Supported on: At least Internet Explorer 9.0

Registry

HKLM Software\Policies\Microsoft\Internet Explorer\Security

HKCU Software\Policies\Microsoft\Internet Explorer\Security

Value name: ENABLE_MD2_MD4

Enabled: ENABLE_MD2_MD4 = 1

Disabled: ENABLE_MD2_MD4 = 0

Description

This policy setting allows you to manage whether Internet Explorer 9 can install ActiveX controls and other binaries signed with MD2 and MD4 signing technologies. Internet Explorer 9 does not support MD2 and MD4 signing technologies by default, because they are not as secure as other technologies. If you enable this policy setting, Internet Explorer 9 installs binaries signed by MD2 and MD4 signing technologies. If you disable or do not configure this policy setting, Internet Explorer 9 does not install binaries signed by MD2 and MD4 signing technologies.