Configure IPv6 for advanced users — by Microsoft Learn

advancedpageLink only (©)

Microsoft advises against disabling IPv6 on Windows and suggests the 'Prefer IPv4 over IPv6' prefix policy (DisabledComponents = 0x20) as a troubleshooting alternative. Editing the registry is risky: back it up first, and note that the correct disable value is 0xFF, not 0xFFFFFFFF.

Quick steps

Back up the registry
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters" /v DisabledComponents /t REG_DWORD /d <value> /f
Restart

Paraphrased from the source. Menus can differ by version, so check the original for full details.

Read the full article on learn.microsoft.com

Source: Configure IPv6 for advanced users by Microsoft Learn. Licence: Link only (©).

Source reviewed: 2026-11-02
Link checked: 2026-11-02
Tested hands-on: Not by Oddbyte.Me

ipv6registrywindows

More in Networking

New zine: Networking! ACK! — by Julia Evans

beginnerpage

Julia Evans introduces a 24-page illustrated zine following a download across the network: packets, DNS, sockets, TCP, HTTP and TLS, plus layers and ports.

What do I need to know before selecting a different wireless channel? — by NETGEAR Support

beginnerpage

Explains when to change Wi-Fi channels, which channels do not overlap (1, 6, 11 in the US for 802.11b/g), and what to do otherwise: keep networks five channels apart, reduce transmit power, or separate access points.

What is double NAT and why is it bad? — by NETGEAR Support

beginnerpage

Describes how a router behind an ISP gateway splits the network into two private networks, which can break gaming, VPNs, port forwarding and some SSL sites. It points to a separate article for the fixes.