Problem with Android Studio 3 how to solve?

Question

Android

Greetings to all
Today I updated Android Studio to 3.0 I
created an empty project and there is such an error

I can’t understand what the problem is

Thank you in advance)

Answer 1

You are behind a proxy. The SSL certificate is spoofed, so the libraries are not downloaded.
You can override the repository addresses by specifying http instead of https.
In build.gradle, in repositories:

// jcenter
maven { url "http://jcenter.bintray.com" }

For other repositories, the same is true.
But it's better to ask the admin to set up filtering.