How to Disable IPv6 on Windows, Mac, Linux, and Your Router

IPv6 is the modern internet protocol designed to replace IPv4 — but that doesn't mean every setup benefits from having it enabled. Whether you're troubleshooting a slow connection, resolving a VPN leak, or simply tidying up your network configuration, disabling IPv6 is a straightforward process. The exact steps depend on your operating system and network setup, and the decision itself depends on factors unique to your environment.

What Is IPv6 and Why Would You Disable It?

IPv6 (Internet Protocol version 6) is the successor to IPv4, offering a vastly larger address space and improved routing efficiency. Most modern operating systems and routers have it enabled by default — even when your ISP doesn't fully support it yet.

Common reasons people choose to disable it:

• VPN compatibility issues — some VPN clients only tunnel IPv4 traffic, leaving IPv6 exposed and creating privacy leaks
• Network troubleshooting — isolating whether IPv6 is causing DNS resolution delays or connection instability
• Legacy application conflicts — older software may behave unexpectedly when dual-stack networking is active
• ISP doesn't support IPv6 — when your provider is IPv4-only, an active IPv6 stack can add unnecessary overhead

Disabling IPv6 doesn't typically break your internet connection. Your device will fall back to IPv4, which remains widely supported across virtually all networks.

How to Disable IPv6 on Windows

Using Network Adapter Settings (GUI Method)

1. Open Control Panel → Network and Sharing Center → Change adapter settings
2. Right-click your active connection and select Properties
3. Scroll down and uncheck Internet Protocol Version 6 (TCP/IPv6)
4. Click OK and restart if prompted

This disables IPv6 on that specific adapter only.

Using PowerShell (System-Wide)

To disable IPv6 across all adapters: