How to disable IPv6 on Windows

On Windows Vista and Windows 7/8/10

1. Click Start then Control Panel.
2. Click Network and Internet then open Network and Sharing Center, finally click Change adapter settings
3. Locate the connection that connects you to the Internet. It may be a PPPoE, a Wireless connection, or a Local Area Connection. If you’re unsure you can apply the following steps to all connections, until the problem is solved.
4. Right-click the connection and choose Properties.
5. Uncheck the box for Internet Protocol Version 6 (TCP/IPv6), found in the Networking tab, or the General tab depending on type of connection.
6. Click OK

 

Screenshot for reference:

 

On Windows XP

1. Click Start then Control Panel.
2. You may have to click Switch to Classic View
3. Double click Network Connections
4. Locate the connection that connects you to the Internet. It may be a PPPoE, a High-speed internet, or a LAN connection. If you’re unsure you can apply the following steps to all connections, until the problem is solved.
5. Right-click the connection and choose Properties.
6. Select the Microsoft TCP/IP version 6, found in the Networking tab, or the General tab depending on type of connection, then click Uninstall. If you can’t find it, then IPv6 is not installed to begin with, so it’s already disabled.
7. Click OK to reboot the computer.