Astrill Setup Manual:How to configure DNS on network adapter on Windows 10
Step 1
Open Control Panel, click on Network and Internet then click on Network and Sharing Center.
On the left pane, click on Change adapter settings.
Step 2
Right-click on your active internet connection (this may be "Ethernet", "Wireless Network Connection" or "Local Area Connection" depending on how your computer is set up) and select Properties.
Step 3
In the Networking tab, click once on Internet Protocol Version 4 (TCP/IPv4) to highlight it, and then click Properties.
Step 4
Select Use the following DNS server addresses and then enter the following:
Preferred DNS server: 8.8.8.8
Alternate DNS server: 8.8.4.4
Then click OK.
Step 5
To confirm if the DNS server addresses is already set, right-click on your active internet connection again and select Status.
Step 6
Click on Details....
Step 7
Under Network Connection Details, you will see 8.8.8.8 and 8.8.4.4 as DNS servers for IPv4. This is a confirmation that DNS has been set.
You can click on Close button now.