Error Cause unable to find valid certification path to requested target

Question

I got the following Error in android Studio 2 2 3 when I sync gradle   Error Cause  unable to find valid certification path to requested target  How can I fix this issue  I am Adding my Gradle file also  apply plugin   com android application  android   compileSdkVersion 25 buildToolsVersion  25 0 2  defaultConfig       applicationId  com sample myapplication      minSdkVersion 16     targetSdkVersion 22     versionCode 1     versionName  1 0      testInstrumentationRunner  android support test runner AndroidJUnitRunner    buildTypes       release           minifyEnabled false         proguardFiles getDefaultProguardFile  proguard-android txt     proguard-rules pro            dependencies   compile fileTree dir   libs   include      jar    androidTestCompile  com android support test espresso espresso-core 2 2 2         exclude group   com android support   module   support-annotations     compile  com android support appcompat-v7 23 4 0  compile  com android support design 23 4 0  compile  com android support palette-v7 23 4 0  testCompile  junit junit 4 12     FireBase compile  com google firebase firebase-messaging 9 0 0     Add this line apply plugin   com google gms google-services    and the project Level Gradle File  buildscript   repositories       jcenter     dependencies       classpath  com android tools build gradle 2 2 3      classpath  com google gms google-services 3 0 0      allprojects   repositories       mavenCentral       jcenter  url  http   jcenter bintray com         maven   url  https   jitpack io        task clean type  Delete    delete rootProject buildDir

User · Answer

I missed this problem after update studio and gradle ,in the log file tips me some maven store has certificate problem.

I tried restart statudio as somebody suggestion but dose work; and somebody said we should set the jre environment ,but I doesn't know how to set it on Mac . So I tried restart Mac. and start studio I found this tips. enter image description here

so the problem is floating on the surface: solution: first step: restart computer ,there are too many problem after android studio update . second step:use the old gradle tool OR download the *pom and jar ,put in correct folder.

User · Answer

I just encountered the similar problem and found a series of steps did help me  Of course few of them is to Change the network to a stronger better one or if you have only one network then try Reconnecting to the network and then simply INVALIDATE RESTART your android studio  If it still shows the error you need to add the  maven  in repositories and point it out to the link as shown below  maven   url  http   jcenter bintray com    Finally Go to    File     Settings       Build Execution and deployment         Gradle          Android Studio        --------And check Enable maven repository option   After that simply clean and rebuild your APP and you will be good to go

User · Answer

If you re in your office  use your smartphone network  I think It will work

User · Answer

I had the same problem  I fixed it by removing commenting proxy settings in gradle properties  Check your gradle properties  if you have some like this   systemProp https proxyPort 8080 systemProp http proxyHost 192 168 1 1 systemProp https proxyHost 192 168 1 1 systemProp http proxyPort 8080   comment it with    Which will look like this    systemProp https proxyPort 8080  systemProp http proxyHost 192 168 1 1  systemProp https proxyHost 192 168 1 1  systemProp http proxyPort 8080

User · Answer

change dependencies from compile to Implementation in build gradle file

User · Answer

This problem might be due to some restricted internet connections    If you are installing build tools on some restricted network  the required certificates might not install    So try changing the network connection     Worked for me

User · Answer

I faced the same issue  but fixed it by adding  maven   url  http   jcenter bintray com     in the project Level Gradle File  buildscript   repositories       jcenter       maven   url  http   jcenter bintray com     dependencies       classpath  com android tools build gradle 2 2 3      classpath  com google gms google-services 3 0 0      allprojects   repositories       mavenCentral       jcenter  url  http   jcenter bintray com         maven   url  https   jitpack io        task clean type  Delete    delete rootProject buildDir

User · Answer

Switching to the smartphone network  amp  disabling the web security tool installed on my computer solved the problem

User · Answer

You are using older version of libraries    compile  com android support appcompat-v7 25 2 0  compile  com android support design 25 2 0  compile  com android support palette-v7 25 2 0  compile  com google firebase firebase-messaging 10 2 0

User · Answer

Run bellow command in Android studio terminal after opening the same project  It worked for me  On Windows  gradlew cleanBuildCache  On Mac or Linux    gradlew cleanBuildCache

User · Answer

If you are using kotlin and its showing this error please update your kotlin gradle plugin in project level build gradle  The certificate expired case   Go to certificates in settings and check if any certificate is expired if any  delete that certificate and clean and sync it will work  Dependencies- unable to find case   In this case delete that dependency and sync the project then add the dependency again with some another version downgraded version  and sync the project it will work    These three cases i faced and wasted so much time  hope this will help someone and save someones day    Thankyou - happy coding   -

User · Answer

Simple Invalidate Restart fixed it for me  No other actions were taken

User · Answer

Like a noob   I was getting a nightmare with this and forgot that i ve recently installed a new AV  Kaspersky   So another solution is  Disable your AV or add exclusions to your AV firewall or proxy  hope it helps to save some time

User · Answer

I have faced this problem with Maven build earlier  It was occurring because I was working in a restricted office network  You need to import required certificate in your keystore   Follow Steps in the answer of below question  quot unable to find valid certification path to requested target quot   but browser says it  39 s OK   use double quotes for fienames pathnames   Note  I am not able to find now exact source from where I solved problem  if I get it  I will update it

User · Answer

For me this worked   buildscript       repositories           maven   url  http   jcenter bintray com           maven               url  https   maven google com               name  Google                         allprojects       repositories           mavenCentral           jcenter  url  http   jcenter bintray com             maven               url  https   maven google com               name  Google

User · Answer

The error is is because of your network restriction that does not allow to sync the project from  http   jcenter bintray com   No need play with the IDE  Android Studio

User · Answer

Just try to build the same project through command prompt and if the download dependencies happen successfully  go to settings in you IntelliJ and map the gradle to point gradle in your system and build should happen fine

User · Answer

If you are running behind a corporate proxy with SSL interception  you will need to follow these steps to trust your proxy certificate for HTTPS   In Android Studio  Open File - gt  Settings  In Tools - gt  Server Certificates  Tick    Accept non-trusted certificates automatically    Also click the         and manually add the corporate proxy root certificate    In Appearance and Behaviour - gt  System Settings - gt  HTTP Proxy  Set your corporate proxy URL and port details     Download KeyStore Explorer  http   keystore-explorer org downloads html In KeyStore Explorer  run as admin   open the Android Studio JRE certificate store  C  Program Files Android Android Studio jre jre lib security cacerts  The password should be    changeit    Import the corporate proxy root certificate  and save    In Android Studio  select File - gt  Invalidate Cache and Restart

User · Answer

Most of the times when I face this issue  I remove replace https with http  It solves the issue

User · Answer

This issue is related to network connectivity if not solved adding maven   url  http   jcenter bintray com   at project level   Just try to change your network and sync the gradle  should fix this issue for sure

User · Answer

Import your company certificate at Tools- Android- SDK Manager- Tools- Server Certificates

User · Answer

I got the same issue  and I fixed it by changing my firewall setting or you can switch to another network reasons behind it when we are running our project run command its configure and check for exiting packages and make proceed to download the new or required  package and the packages are stored on non-secure IP hosting so  your firewall will try to protect you and you will get these errors

User · Answer

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] Error:Cause: unable to find valid certification path to requested target

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