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Windows CLAT reaches general availability for IPv6 migration

Microsoft Networking Blog · 27 Oct 2026

✅ Windows CLAT is generally available, helping IPv4-dependent applications communicate over IPv6-only or IPv6-mostly networks.

As the client-side component of 464XLAT, it translates traffic for a network-side NAT64/PLAT service; it does not remove that network requirement.

Microsoft describes support across Wi-Fi, Ethernet and cellular interfaces, with translation-prefix discovery through router advertisements or DNS. The capability supports staged IPv6 migration while retaining access to IPv4 resources.

The article links deployment and diagnostic guidance rather than promising compatibility without configuration checks.

Partner briefing

What it is

General availability of Windows CLAT.

What’s changing

Client-side IPv4-to-IPv6 translation is generally available.

Why it matters

Supports IPv6 migration while retaining IPv4 application connectivity.

Who it affects

Network administrators and partners modernizing Windows connectivity.

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