Crashlytics connection refused - failed to connect to failed to connect to api.crashlytics.com

Question

I'm receiving the following error when starting my app. Configured Crashlytics with the plugin - appropriate entries in build.gradle, AndroidManifest.xml, crashlytics.properties exists. Starting Crashlytics from my Application class. I get this every time. I'm not behind a proxy or anything.

E/Crashlytics﹕ Error performing auto configuration.
com.crashlytics.android.internal.aD: java.net.ConnectException: failed to connect to api.crashlytics.com/127.0.0.1 (port 443) after 10000ms: isConnected failed: ECONNREFUSED (Connection refused)
        at com.crashlytics.android.internal.ay.a(SourceFile:2582)
        at com.crashlytics.android.internal.ay.b(SourceFile:2562)
        at com.crashlytics.android.internal.ay.b(SourceFile:2548)
        at com.crashlytics.android.a.a(SourceFile:81)
        at com.crashlytics.android.a.a(SourceFile:50)
        at com.crashlytics.android.Crashlytics.a(SourceFile:895)
        at com.crashlytics.android.Crashlytics.a(SourceFile:54)
        at com.crashlytics.android.t.a(SourceFile:839)
        at com.crashlytics.android.internal.aa.run(SourceFile:13)
        at java.lang.Thread.run(Thread.java:841)
 Caused by: java.net.ConnectException: failed to connect to api.crashlytics.com/127.0.0.1 (port 443) after 10000ms: isConnected failed: ECONNREFUSED (Connection refused)
        at libcore.io.IoBridge.isConnected(IoBridge.java:223)
        at libcore.io.IoBridge.connectErrno(IoBridge.java:161)
        at libcore.io.IoBridge.connect(IoBridge.java:112)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
        at java.net.Socket.connect(Socket.java:843)
        at com.android.okhttp.internal.Platform.connectSocket(Platform.java:131)
        at com.android.okhttp.Connection.connect(Connection.java:101)
        at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:294)
        at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
        at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:89)
        at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)
        at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:254)
        at com.crashlytics.android.internal.ay.i(SourceFile:2486)
        at com.crashlytics.android.internal.ay.j(SourceFile:2499)

Answer 1

Hemal from Crashlytics here. Can you check if any ad-blocking software is interfering with the connection?