Android peer not authenticated

Question

Everything has been working, only today i started to get an error message, and i can't even "Sync Project with Gradle files" from Android Studio. The only thing i have changed was ... the office :D

Error:A problem occurred configuring project ':app'. Could not download library.jar (com.mcxiaoke.volley:library:1.0.16) Could not GET 'https://jcenter.bintray.com/com/mcxiaoke/volley/library/1.0.16/library-1.0.16.jar'. peer not authenticated

And my build.grade

buildscript {
    repositories {
        jcenter()
        maven { url 'http://download.crashlytics.com/maven'}
        maven { url 'http://dl.bintray.com/amulyakhare/maven'}
    }

    dependencies {
        classpath 'com.crashlytics.tools.gradle:crashlytics-gradle:1.+'
    }
}
....

gradle-wrapper.properties:

distributionUrl=https\://services.gradle.org/distributions/gradle-2.3-all.zip

I also tried with http instead of https, but still the same problem.

Does anyone have similar problem?

Answer 1

Temporary solution

Add this to build.gradle

repositories {
    mavenLocal()
    maven {
        name "jcenter"
        url "http://jcenter.bintray.com/"
    }
}

Answer 2

It seems a temporary issue with jcenter with an invalid SSL.

You can switch to mavenCentral repo in your build.gradle file.

repositories {
     mavenLocal()
     mavenCentral()
}

Answer 3

The issue occurs when cacerts file gets messed up. After attempting all solutions that I found on the Internet, I could finally resolve this by reinstalling java.

Answer 4

changing the version of the jdk to the latest version worked for me (Oracle Java 8). This question shows you how to do this on android studio: How to specify the JDK version in android studio?

Answer 5

I tried with all the above solutions didn't work, this once helped me lot with latest studio 2.2 preview 7. Make the changes in build.gradle of root project:

    allprojects {
    repositories {
        jcenter {
            url "http://jcenter.bintray.com/"    
                }

       }
}

Answer 6

Add these properties to your gradle home directory in a new gradle.properties file

systemProp.https.proxyHost=[your proxy https host IP or DNS name]
systemProp.https.proxyPort=[your proxy https port, usually 8080]
systemProp.http.proxyHost=[your proxy http host IP or DNS name]
systemProp.http.proxyPort=[your proxy http port, usually 8080]

OSX: /users/yourusername/.gradle/gradle.properties

Windows: C:\Users\yourusername.gradle\gradle.properties

Then, restart Android Studio and open your project.

Note: I used the same values for HTTP and HTTPS, they could be different from yours.

Answer 7

I had this error and it was happening because of a VPN proxy issue. I disabled my VPN and everything worked fine after. I used this command (on a Mac):

sudo /opt/cisco/anyconnect/bin/acwebsecagent -disablesvc -websecurity