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Microsoft Edge: Changes to local IP address detection for proxy auto-config (PAC) scripts

Roadmap ID
568787
View in M365 Roadmap
Product
Microsoft Edge
Published
August 5, 2026
Status
In development
Cloud Instance
Worldwide (Standard Multi-Tenant)
Release Phase
General Availability
Platform
Web
Expected Release
September 2026

Description

Microsoft Edge is changing how it selects the local network address reported to proxy auto-config (PAC) scripts and is adding administrator control over it. The default IPv4 and IPv6 probe destinations now match Chromium’s defaults. Administrators can override these defaults using the PacMyIpAddressIPv4ProbeAddress and PacMyIpAddressIPv6ProbeAddress policies when required by their network routing.

Change History

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No change history available

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