Disable IPv6 on a Windows 10 Computer
Step 1: Get Started
Right-click on the “Network 
/ Wi-Fi 
” icon on the bottom-right hand side of your screen to open up the menu shown below.
Next, click on Open Network and Sharing Center.
Step 2: Change Adapter Settings
In the Network and Sharing Center window, click on Change adapter options as shown in the screen shot below
You will then see a list of network adapters available on your computer. (Please refer to the screenshot below for an example of how the list will look like)
Right click on your active network adapter (Ethernet or Wi-Fi) and select Properties.
Note: If you’re connected to the internet wirelessly, the corresponding adapter should be “Wi-Fi“. However, if you’re connected to the internet via a LAN cable instead, the corresponding adapter should be “Ethernet“.
Step 3: Disabling IPv6
In the Properties window, scroll down until you see Internet Protocol Version 6 (TCP/IPv6).
Un-check the Internet Protocol Version 6 (TCP/IPv6) checkbox and click on OK to save the changes.
Step 4: Restart Computer