DNS-over-HTTPS allows DNS resolution to be performed via the HTTPS protocol rather than through the normal plain text DNS lookups. With DoH, you’ll be able to bypass censorship, improve the security of your connection, and increase your network’s privacy. DoH support is included in Windows 10 preview builds, but the feature is not enabled by default. You can use DoH when making DNS queries in your apps or browsers, you can enable it manually from Settings or by tweaking Windows Registry.
Source: https://www.bleepingcomputer.com/news/microsoft/how-to-enable-dns-over-https-doh-in-windows-10/