Error 403 when trying to "synchronize project with Gradle"

Question

When I open Android Studio, it fails to synchronize the project with this "Gradle", it returns the following error in "Messages Gradle Sync"

Error: Could not GET 'http://jcenter.bintray.com/com/android/tools/build/gradle/0.12.2/gradle-0.12.2.jar'. Received status code 403 from server: Forbidden Enable Gradle 'offline mode' and sync project

Imagery:

_{build.Gradle:}

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.12.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        mavenCentral()
    }
}

_{Gradle-wrapper.properties}

#Wed Apr 10 15:27:10 PDT 2013
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=http\://services.gradle.org/distributions/gradle-1.12-all.zip

You know what it can be?

Answer 1

It seems to me that Jcenter does not yet have the com.android.tools.build which is used in Gradle to build apk.

Packages exist (the url for it is: http://jcenter.bintray.com/android/tools/build/gradle/0.12.2/#Gradle-0.12.2.jar), but Gradle or Android Studio is having some problem getting these packages (protocol or something), which generates the error 403.

Change the repository jcenter of the definition of buildscript for mavenCentral. This is a bug that has a Issue that has not been resolved yet.

Your build.Radle should stay:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        // Troquei o jcenter pelo mavenCentral. Depois que o issue for resolvido, pode voltar ao normal
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.12.2'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        mavenCentral()
    }
}

The fact of using the mavenCentral in the repository definition for all projects does not affect the repository used for the buildscript, by the definition of buildscript be more specific.

Answer 2

If you are on a firewalled network this may be the problem following the solution

No Android Studio va em File>Settings>Gradle>Global Gradle Settings and in the Gradle VM options and specify the proxy data:

-Dhttp.proxyHost=dummyHost -Dhttp.proxyPort=dummyPort -Dhttp.proxyUser=dummyUser -Dhttp.proxyPassword=dummyPassword 

Filling in with your data of course.