Astrill Setup Manual:How to setup WireGuard on Windows 10
Download WireGuard client for your Windows OS from following link: https://www.wireguard.com/install/
Install downloaded WireGuard client and restart your PC.
Login your Astrill account on Astrill website: https://www.astrill.com/member-zone/log-in
After login, go to "VPN Services" tab and then go to "WireGuard configurations".
Now generate WireGuard configuration file for your desired server and download it.
Run WireGuard client as administrator.
Import downloaded WireGuard .conf file into WireGuard client which was downloaded at 5th step.