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Approved Installation Sites for ActiveX Controls

Policy ID
ApprovedActiveXInstallSites
Scope
Computer Configuration
Supported on
At least Windows Vista
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Windows Components › ActiveX Installer Service

Description

This policy setting determines which ActiveX installation sites standard users in your organization can use to install ActiveX controls on their computers. When this setting is enabled, the administrator can create a list of approved Activex Install sites specified by host URL.

If you enable this setting, the administrator can create a list of approved ActiveX Install sites specified by host URL.

If you disable or do not configure this policy setting, ActiveX controls prompt the user for administrative credentials before installation.

Note: Wild card characters cannot be used when specifying the host URLs.

Options

  • Host URLs
  • Contains policy for the host URL.
  • For example
  • HostName: http://activex.microsoft.com
  • Value: 2,1,0,0
  • The value for each Host URL is four settings in CSV format.
  • Which represents "TPSSignedControl,SignedControl,UnsignedControl,ServerCertificatePolicy
  • The three left most values in the policy control the installation of ActiveX controls based on their signature.
  • They can be one of the following.
  • 0: ActiveX control will not be installed
  • 1: Prompt the user to install ActiveX control
  • 2: ActiveX control will be silently installed
  • Controls signed by certificates in trusted publisher store will be silently installed
  • Silent installation for unsigned controls is not supported
  • The right most value in the policy is a bitmasked flag
  • The flags are used for ignoring https certificate errors.
  • The default value is 0.
  • Which means that the https connections must pass all security checks
  • Use the combination of the following values
  • to ignore invalid certificate errors
  • 0x00000100 Ignore Unknown CA
  • 0x00001000 Ignore invalid CN
  • 0x00002000 Ignore invalid certificate date
  • 0x00000200 Ignore wrong certificate usage

Registry

ComputerHKEY_LOCAL_MACHINE
HKLM\SOFTWARE\Policies\Microsoft\Windows\AxInstallerView registry values
  • ApprovedListREG_DWORD
HKLM\SOFTWARE\Policies\Microsoft\Windows\AxInstaller\ApprovedActiveXInstallSitesView registry values
  • (list values)REG_SZ

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