title: Could not resolve io.fabric.tools:gradle:1.+
body: <p>I'm having an issue with building my project. First time build. I'm behind a proxy and all other dependencies downloaded only this having an issue.</p>
  
  <p>I tried a few options found on SO, but had no luck so far. Can someone give me a clue on how to fix this?</p>
  
  <p>Things I tried so far:</p>
  
  <ul>
  <li><code>File -&gt; Invalidate Cache/Restart -&gt; Invalidate and Restart</code></li>
  <li>updated the <code>crashlytics:2.5.5@aar</code> to <code>crashlytics:2.6.4@aar</code> </li>
  <li>restarted Android Studio</li>
  <li>I'm not in offline mode</li>
  </ul>
  
  <p><strong><code>app/build.gradle</code></strong></p>
  
  <pre><code>buildscript {
      repositories {
          maven { url https://maven.fabric.io/public }
          mavenCentral()
          jcenter()
      }
  }
  
  apply plugin: 'io.fabric'
  
  dependencies {
      compile("com.crashlytics.sdk.android:crashlytics:2.5.5@aar") {
          transitive = true
      }
  }
  </code></pre>
  
  <p><strong>Root <code>build.gradle</code></strong></p>
  
  <pre><code>buildscript {
      repositories {
          jcenter()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:2.2.3'
          // NOTE: Do not place your application dependencies here; they belong
          // in the individual module build.gradle files
      }
  }
  </code></pre>
  
  <p><strong>Error:</strong></p>
  
  <pre><code>Failed to list versions for io.fabric.tools:gradle.
    Unable to load Maven meta-data from https://maven.fabric.io/public/io/fabric/tools/gradle/maven-metadata.xml.
      Could not GET 'https://maven.fabric.io/public/io/fabric/tools/gradle/maven-metadata.xml'.
        Connect to maven.fabric.io:443 [maven.fabric.io/54.230.133.33] failed: Connection refused: connect
  Could not resolve io.fabric.tools:gradle:1.+.
    Failed to list versions for io.fabric.tools:gradle.
      Unable to load Maven meta-data from https://jitpack.io/io/fabric/tools/gradle/maven-metadata.xml.
        Could not GET 'https://jitpack.io/io/fabric/tools/gradle/maven-metadata.xml'.
          Connect to jitpack.io:443 [jitpack.io/104.24.23.62, jitpack.io/104.24.22.62] failed: Connection refused: connect
  Could not resolve io.fabric.tools:gradle:1.+.
    Failed to list versions for io.fabric.tools:gradle.
      Unable to load Maven meta-data from https://repo1.maven.org/maven2/io/fabric/tools/gradle/maven-metadata.xml.
        Could not GET 'https://repo1.maven.org/maven2/io/fabric/tools/gradle/maven-metadata.xml'.
          Connect to repo1.maven.org:443 [repo1.maven.org/151.101.24.209] failed: Connection refused: connect
  Could not resolve io.fabric.tools:gradle:1.+.
    Failed to list versions for io.fabric.tools:gradle.
      Unable to load Maven meta-data from https://jcenter.bintray.com/io/fabric/tools/gradle/maven-metadata.xml.
        Could not GET 'https://jcenter.bintray.com/io/fabric/tools/gradle/maven-metadata.xml'.
          Connect to jcenter.bintray.com:443 [jcenter.bintray.com/75.126.118.188] failed: Connection refused: connect
  </code></pre>