Block sites from making network requests to the local device.
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Policy overview

Key metadata and intent for this policy.

Category
Microsoft Edge > Network settings
Supported on
Microsoft Edge version 146, Windows 7 or later

Supported OS tags: Windows7

Specifies a list of URL patterns for which requests initiated from matching origins to loopback addresses (127.0.0.1, ::1, localhost) are blocked from issuing Local Network Access requests. If a requesting origin matches a URL pattern specified in this policy, requests to loopback addresses are blocked. For origins not covered by this policy, the user's personal settings and local network access restrictions apply. Multiple policies can specify origins that affect requests to the local device. If an origin matches more than one of the following policies, they are applied in the following order of precedence: - LoopbackNetworkBlockedForUrls - LoopbackNetworkAllowedForUrls - LocalNetworkAccessBlockedForUrls - LocalNetworkAccessAllowedForUrls Note: This policy improves local network security by blocking specified public websites from accessing loopback addresses. It helps prevent unauthorized external sites from reaching local services running on the device unless explicitly permitted. For more information about Local Network Access, see https://wicg.github.io/local-network-access/ Example value: http://www.example.com:8080 [*.]example.edu *

Internal name
LoopbackNetworkBlockedForUrls
Policy ID
dca2c065e757
Elements
1

Registry values

How enabled and disabled states update the registry.

No explicit registry values are set for enabled or disabled states.

Policy elements

Inputs and configuration options exposed by this policy.

ScopeElementTypeRegistry mappingConstraints & behaviorCopy
Block sites from making network requests to the local device.
ID LoopbackNetworkBlockedForUrlsDesc
list
Path
Software\Policies\Microsoft\Edge\LoopbackNetworkBlockedForUrls
Value name
1, 2, …
Type
REG_SZ
List: standard
Block sites from making network requests to the local device.
Both · Type list
Registry mapping
Path
Software\Policies\Microsoft\Edge\LoopbackNetworkBlockedForUrls
Value name
1, 2, …
Type
REG_SZ
Details
List: standard