Android Studio - Unable to find valid certification path to requested target

Question

I m getting this error  Gradle  project name  project refresh failed  Unable to find valid certification path to requested target   when I create a new project on Android Studio 0 8 14 Mac OSX  Build gradle file seems to become empty     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 13 2              NOTE  Do not place your application dependencies here  they belong            in the individual module build gradle files          allprojects       repositories           jcenter             And I can t run the project  seems that I have to configure everything manually   Here is the idea log http   pastebin com kyhfrBp9

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I changed updated  my gradle version and it worked Form  classpath  com android tools build gradle 3 1 4    To  classpath  com android tools build gradle 3 3 0

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I had this problem today after upgrading to Android Studio 3 2 Beta 2   I had configured my JDK for OpenJDK 10 0 1  and it threw this error after upgrading   I set the JDK back to using the enbedded JDK  and the error went away   I have no idea why it worked fine before I upgraded to Beta 2  but all is good now   Honestly I guess there is no need for OpenJDK 10 for Android

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I m in an enterprise environment with a proxy firewall virus-scanner combination adding the company own SSL root certificate  self signed  to the trustpath of every SSL connection to investigate also into SSL connections  That was exactly the problem  If you are in the same situation this solution could help    Open https   jcenter bintray com in the browser  I prefer Firefox  Click on the padlock symbold to check the certificated trustpath  If the top root certificate in the tree is a certficate signed by your company export it to your harddisk  To be safe export also every certificate in between Open the truststore of Android Studio in path JDKPATH jre lib security cacerts with the Keystore Explorer tool Keystore Exlorer with password  changeit  Import the exported certs into the trusstore starting with the root certificate of you company and go the step 6  In the most cases this will do the trick  If not  import the other certs as well step by step  Save the truststore Exit Android Studio with  File -  Invalidate Caches Restart

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jcenter   equals to https   bintray com bintray jcenter You need import jcenter s cerficate into your java keystore  Steps   Visit jcenter using your browser and export the certificate as  crt file   lock icon on the left of Firefox address bar  or Chrome developer tool secuity tab  Download this tool and run it  Select  quot Open an existing KeyStore quot  button to open JDKPATH jre lib security cacerts  the password is  quot changeit quot  Use the  quot Import Trusted Certificate quot  button to import the  crt file  then save and exist  If you are behind proxy  in gradle properties  besides setting systemProp http proxyHost and systemProp http proxyPort also set systemProp https proxyHost and systemProp https proxyPort By now it should be fine

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If you are working in a restricted workplaces you probably will encounter this problem   A combination of a few things worked for me  Basically change https to http   From https    repositories      jcenter       To     repositories           maven   url  http   jcenter bintray com             and in gradle-wrapper properties      From         distributionUrl https    services gradle org distributions gradle-3 3-all zip   To        distributionUrl http    services gradle org distributions gradle-3 3-all zip     And then   -  optional   File - gt  Invalidate Caches   Restart  - Give a clean build    To verify    Check your Gradle console  It should start downloading libs from jcenter via HTTP

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I had the same issue and it was caused because cyberoam was blocking my following URL  Caused by  org gradle api resources ResourceException  Unable to load Maven meta-data from https   maven fabric io public io fabric tools gradle maven-metadata xml

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It usually happen when your have included the dependency and it won t have repository reference like mavenCentral   or jcenter   etc to download it  What I usually do identify such dependency is set gradle to work offline  Android studio will automatically show a dependency which is not locally available  then look for the dependency details in their providers github page like from which repository to pick from and update your repositories and sink it  Hope it will work

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If you still have the problem  try deleting the directory named   AndroidStudio1 2  under  C  Users UserName  AndroidStudio1 2   Of course the name differs according to which version you have  That worked for me

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For me the issue was android studio was not able to establish connection with   https   jcenter bintray com    Changing this to  http  fixed the issue for me  Though this is not recommended    In your build gradle file  change   repositories      jcenter       to  repositories      maven   url  http   jcenter bintray com

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I got it because I m behind a proxy  I had set the http but not the https proxy in gradle properties  Https was needed in this case   systemProp http proxyHost  lt host gt  systemProp http proxyPort  lt port gt  systemProp https proxyHost  lt host gt  systemProp https proxyPort  lt port gt    Also  take a look at the Android Studio logs for where the error could be

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Since this is caused by a misconfiguration of the network you are operating on just setup your smartphone to share its internet connection using USB tethering and use it to download the missing packages

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Check proxy application like fiddler in your system  If its running close that application and restart your android studio

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For me it was my internet  I was working on restricted network

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Go to The Gradle Console in bottom right and open it Here you will be seeing some https https calls click on the links and open them in web browser then try clean build it worked for me   I think It is happening because studio is not able to get the response from the hit

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Here is my solution for key phrases of the messages     unable to find valid certification path    and    PKIX path building failed      These phrases are shown when a SSL certification file can not be found   Open https   jcenter bintray com  in your browse and export the certificate in cer format   Put the certificate in Android Studio   s cert folder   your-home-directory   AndroidStudio3 0 system tasks cacerts   Then all went well

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I faced similar error after upgrading to Android Studio 3 1 2 with gradle 4 4  amp  plugin 3 1 2  then tried almost all of the above solutions with generating the same error again  amp  again   Invalidate Caches   Restart finally have done me the favor  File Invalidate Caches   Restart    Invalidate and Restart

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Try to update your Android Studio  now is version 1 0 2

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It happened to me  and turned out it was because of Charles Proxy      Charles Proxy is a HTTP debugging proxy server application   Solution  only if you have Charles Proxy installed     Shut down Charles Proxy  Restart Android Studio

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My company has us using FortiClient VPN  which caused this error to occur  Try disconnecting from your VPN if applicable  and try again

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Add latest gradle version properly in build gradle file and latest distributionUrl in gradle-wrapper properties file    refer https   developer android com studio releases gradle-plugin html for the latest gradle version of android studio    Make sure network connectivity is proper   Network connection should not block upgrading gradle in android studio    After gradle upgrade android studio will prompt alert to accept decline certificate and we should accept the certificate

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Even though this question is very old  many must be facing the same issue  so I would like to state how I fixed this   The problem is classpath  com android tools build gradle 0 13 2  By above line in build gradle you are asking it to find a particular version of gradle but this version is not there in your machine  The best it to change the above line to   classpath  com android tools build gradle

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Okay  Probably I am late but I have faced this issue after upgrading to 3 0 1 from 3 0   And this problem because I am working in restricted network    The solution which worked for me is as follow   Solution  Step 1  Get Certificate  jcenter   equals to https   bintray com bintray jcenter  You need import jcenter s cerficate into your java keystore   Visit jcenter using your browser and export the certificate as  cer file   lock icon on the left of Firefox address bar  or Chrome developer tool secuity tab  Internet Explorer and Edge do not support saving of Website certificates  though    Step 2  Import Certificate In Android Studio  go to File - gt  Settings - gt  Tools - gt  Server Certificates   Under Accept certificates click on     Select the exported certificate    Step 3  Refresh Keystore In Android Studio  go to File - gt  Invalidate Caches Restart     Select Invalidate and Restart from the message box that appears

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Seems like a bug to me  I ve had the same problem and worked around it by manually starting gradlew bat in my project directory

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quot Unable to find valid certification path to requested target quot  If you are getting this message  you probably are behind a Proxy on your company  which probably is signing all request certificates with your company root CA certificate  this certificate is trusted only inside your company  so Android Studio cannot validate any certificate signed with your company certificate as valid  so  you need to tell Android Studio to trust your company certificate  you do that by adding your company certificate to Android Studio truststore   I m doing this on macOS  but should be similar on Linux or Windows   First  you need to save your company root CA certificate as a file  you can ask this certificate to your IT department  or download it yourself  here is how  Open your browser and open this url  for example  https   jcenter bintray com  or https   search maven org   click on the lock icon and then click on Show certificate   On the popup window  to save the root certificate as a file  make sure to select the top level of the certificates chain  the root cert  and drag the certificate image to a folder directory on your disk drive  It should be saved as a file as  for example  my-root-ca-cert cer  or my-root-ca-cert pem   Second  let s add this certificate to the accepted Server Certificates of Android Studio   On Android Studio open Preferences - gt  Tools - gt  Server Certificates  on the box Accepted certificates click the plus icon      search the certificate you saved previously and click Apply and OK   Third  you need to add the certificate to the Android Studio JDK truststore  Gradle use this JDK to build the project  so it s important    In Android Studio open File - gt  Project Structure - gt  SDK Location - gt  JDK Location  Copy the path of JDK Location  and open the Terminal  and change your directory to that path  for example  execute  cd  Applications Android  Studio app Contents jre jdk Contents Home    don t forget to scape the whitespace   quot    quot   Now  to import the certificate to the truststore  execute    bin keytool -importcert -file  path to your certificate my-root-ca-cert cer -keystore   jre lib security cacerts -storepass changeit -noprompt   Finally  restart Android Studio  or better click File - gt  Invalidate Caches   Restart  Done  you should be able to build your project now

[android] Android Studio - Unable to find valid certification path to requested target

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