Prohibit connection to non-domain networks when connected to domain authenticated network

Policy ID
WCM_BlockNonDomain
Scope
Computer Configuration
Supported on
At least Windows Server 2012, Windows 8 or Windows RT
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Network › Windows Connection Manager

Description

This policy setting prevents computers from connecting to both a domain based network and a non-domain based network at the same time.

If this policy setting is enabled, the computer responds to automatic and manual network connection attempts based on the following circumstances:

Automatic connection attempts
- When the computer is already connected to a domain based network, all automatic connection attempts to non-domain networks are blocked.
- When the computer is already connected to a non-domain based network, automatic connection attempts to domain based networks are blocked.

Manual connection attempts
- When the computer is already connected to either a non-domain based network or a domain based network over media other than Ethernet, and a user attempts to create a manual connection to an additional network in violation of this policy setting, the existing network connection is disconnected and the manual connection is allowed.
- When the computer is already connected to either a non-domain based network or a domain based network over Ethernet, and a user attempts to create a manual connection to an additional network in violation of this policy setting, the existing Ethernet connection is maintained and the manual connection attempt is blocked.

If this policy setting is not configured or is disabled, computers are allowed to connect simultaneously to both domain and non-domain networks.

Registry

ComputerHKEY_LOCAL_MACHINE
  • fBlockNonDomainREG_DWORD

Other policies in the same category

View all policies in this category (5)