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RM568787Microsoft Edge: v.153 - Changes to local IP address detection for proxy auto-config (PAC) scripts

Summary

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.

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.

GA date: September CY2026

Version history

2 versions tracked

Updated 1 time since Aug 5, 2026. Microsoft 365 Message Center only shows the current version; this archive preserves tracked history.

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  1. Sep 15, 2026 - 11:00 PMLatest - v2

    Changed: Title, Tags, Status

  2. Aug 5, 2026 - 10:47 PMOriginal - v1

    Changed: Initial version

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