This error may occur after users authenticate their Google account and very next page, they see “This site can’t be reached (site name)” error. This problem can be solved with the following method.
open the command prompt (cmd) and run this command:
If the problem still not solved then follow this.
Open the following URL in your Chrome browser and push the button “Clear host cache”:
In case it still does not work, there is an issue with the DNS resolvers you use on your local computer. This can be fixed by configuring alternative resolvers on your local PC. A short guide on how to do so can be found here: