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
}

I had this issue before, It go somehow solved by properly exiting the application, restarting pc, and then open app and rebuild graddle. Something to with local cache issue. app i mean android studio. — Smit, Feb 23 '17 at 12:24
Must be that, I have Gradle issues too when I try to build my project from a company network. The most probable cause is a proxy wall. — Bisonfan95, Mar 06 '17 at 16:44
try adding this lines to your gradle.properties file and complete them with the respective credentials systemProp.https.proxyHost= systemProp.https.proxyPort= systemProp.http.proxyUser= systemProp.http.proxyPassword= — Bisonfan95, Mar 06 '17 at 16:54
@Bisonfan95 Added these already but couldnt resolved the issue — Renjith Krishnan, Mar 07 '17 at 04:49

score 98 · Accepted Answer · answered Jun 14 '17 at 16:24

98

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.....

answered Jun 14 '17 at 16:24

Rajat Anand

998
7
7

Worked for me.... Earlier, I was working on my University network but I changed to my smartphone network, it worked for me. – Vinod Kumar Chauhan Jun 12 '18 at 17:23
3

Yep this did it for me too. I was on a corporate network and when I switched it worked. – Beezer Jun 22 '18 at 09:11
1

Had the same issue, turns out I had proxy turned on. Disabled it and it worked. – Ivan Leong Feb 20 '19 at 09:23
or disable a sort of web proxy and https://stackoverflow.com/a/62836938/4770877 – yoAlex5 Jul 10 '20 at 15:01
1

Restart Charles Proxy and disable proxying, ssl and recording – yoAlex5 Oct 07 '20 at 14:59

score 74 · Answer 2 · edited Nov 14 '19 at 01:14

74

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
}

edited Nov 14 '19 at 01:14

Ishaan Javali

1,711
3
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answered Dec 26 '17 at 10:40

Amaldev

983
8
10

ok but _why_ did this work? whats happening here thats causing this issue? – red888 Aug 04 '20 at 21:04
Mine was an issue with McAffee. I had to disable it before gradle would sync properly. – James Jan 25 '22 at 07:41

score 41 · Answer 3 · answered Nov 25 '20 at 01:59

"Unable to find valid certification path to requested target"

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 -> Tools -> 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 -> Project Structure -> SDK Location -> 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, "\ ")

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 -> Invalidate Caches / Restart

Done, you should be able to build your project now.

Broken images didn't help any, but this answer DID fix my problem. I initially skipped the last step, which is what I truly needed. — IanCaz, Jan 18 '21 at 19:43
in case you use jdk 11 this: ./jre/lib/security/cacerts should be: ./lib/security/cacerts — Vadim Eksler, Apr 27 '22 at 06:25
Good explanation and even better solution that works even in 2023. Thanks a lot! FYI, if anybody's using Android Studio Preview versions like me, the path to keystore is then: lib/security/cacerts — Damercy, Jul 06 '23 at 10:18

score 13 · Answer 4 · edited May 23 '17 at 11:47

13

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 "unable to find valid certification path to requested target", but browser says it'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

edited May 23 '17 at 11:47

Community

1
1

answered Mar 09 '17 at 06:33

Rahul Mahale

139
4

https://stackoverflow.com/questions/26180650/unable-to-find-valid-certification-path-to-requested-target-but-browser-says?answertab=votes#tab-top worked for me – Ali Ashraf Aug 10 '17 at 08:56
1

for Intellij Idea: https://intellij-support.jetbrains.com/hc/en-us/community/posts/115000094584-IDEA-Ultimate-2016-3-4-throwing-unable-to-find-valid-certification-path-to-requested-target-when-trying-to-refresh-gradle – Bechyňák Petr Feb 20 '18 at 14:23
I tried adding certificate also but that didn't helped. – Anukool srivastav Oct 19 '18 at 05:03

score 13 · Answer 5 · answered Oct 26 '17 at 10:52

13

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

answered Oct 26 '17 at 10:52

Александр М

131
1
3

This is probably the correct answer, just make sure to restart IntelliJ after setting the cert. – dardo May 09 '18 at 16:32
1

I added certificate from https://bintray.com/bintray/jcenter. Restart studio and build was successful. – IfOnly Apr 08 '19 at 14:02
@IfOnly Can you link to where to get the cert for jcenter? – JPM Aug 14 '19 at 17:19

score 8 · Answer 6 · answered Oct 02 '18 at 04:16

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.

The setting `Android Studio` > `Enabled embeded marvin repository` seems to finally make things work. Thanks. — Ben, Feb 23 '19 at 11:20

score 7 · Answer 7 · answered Jun 11 '19 at 07:42

7

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

answered Jun 11 '19 at 07:42

ozanurkan

399
4
13

1

This saved my day. – dhamini poornachandra Aug 19 '19 at 06:51
9

This is NOT a solution – Phil Oct 23 '19 at 07:34
it worked for me ,cause my company network have more security – ozanurkan Oct 23 '19 at 08:11

score 6 · Answer 8 · answered Aug 18 '20 at 13:08

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 -> Settings
- In Tools -> Server Certificates
  - Tick ‘Accept non-trusted certificates automatically’
  - Also click the ‘+’ and manually add the corporate proxy root certificate.
- In Appearance and Behaviour -> System Settings -> 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 -> Invalidate Cache and Restart

Thanks man, it solved my problem, this was exactly the problem I was experiencing, due to internal proxy restrictions. — rodolfocop, May 31 '22 at 20:16

score 4 · Answer 9 · answered Nov 10 '17 at 06:16

4

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

answered Nov 10 '17 at 06:16

Vijay

575
4
14

1

Or just remove entirely. – Zoe Apr 03 '19 at 20:47
@Zoe yes, we can but what if we need in the future? Better option is comment. – Vijay Apr 18 '19 at 18:44
1

This solved my problem - I mean removing the https proxy! – avijendr Feb 01 '21 at 21:46

score 3 · Answer 10 · edited Jan 25 '18 at 14:15

3

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.

edited Jan 25 '18 at 14:15

geisterfurz007

5,292
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answered Mar 17 '17 at 11:27

kan137g

41
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I missed the same problem when my colleague update studio but I haven't update . Then I update studio ，but the problem occurs again . **I tried a lot of solution until this solved my problem. **. My computer is Mac. – kan137g Apr 07 '17 at 03:06
I missed the same problem again, all the solution description above doesn't work, then I closed Charles and restart studio , it's ok . – kan137g Apr 18 '17 at 07:15

score 1 · Answer 11 · answered Mar 04 '17 at 10:14

1

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'

answered Mar 04 '17 at 10:14

Sarvex

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2
7
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Update the gradle in the configuration and the error. – Sarvex Mar 06 '17 at 08:01
Error:Cause: unable to find valid certification path to requested target. This error I got when the gradle Sync – Renjith Krishnan Mar 06 '17 at 09:18

score 1 · Answer 12 · answered Aug 21 '18 at 21:32

1

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.

answered Aug 21 '18 at 21:32

Crythephoenix

59
6

score 1 · Answer 13 · answered Sep 16 '18 at 10:35

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'
        }
    }
}

score 1 · Answer 14 · answered Sep 10 '19 at 17:26

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**:-)**

score 1 · Answer 15 · answered Nov 26 '20 at 11:15

1

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

answered Nov 26 '20 at 11:15

Avinash

879
2
14
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This worked for me. thank you so much! I first followed Minion point-2 and then your command. – Coder17 Dec 07 '21 at 13:52

score 0 · Answer 16 · answered Apr 20 '18 at 16:54

0

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.

answered Apr 20 '18 at 16:54

Amarnath J'nathan

1

score 0 · Answer 17 · answered May 10 '18 at 13:45

0

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).

answered May 10 '18 at 13:45

Satyam Anand

377
1
8

score 0 · Answer 18 · answered Feb 25 '19 at 06:54

0

change dependencies from compile to Implementation in build.gradle file

answered Feb 25 '19 at 06:54

Ajinkya Kalaskar

92
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score 0 · Answer 19 · answered Oct 20 '19 at 16:43

0

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

answered Oct 20 '19 at 16:43

rajkabbur

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This is a local solution, as there are people working in companies where they cannot disable security tool installed on their computer. – Olórin Jan 21 '20 at 15:42

score 0 · Answer 20 · answered Feb 02 '20 at 08:36

0

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.

answered Feb 02 '20 at 08:36

Dev

139
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score 0 · Answer 21 · answered Feb 17 '21 at 05:52

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

score 0 · Answer 22 · edited Mar 27 '21 at 02:56

0

Those who tried all the above answers and didn't help, or lazy to follow those steps, should try this quick-setting first.

Go to Android Studio -> Appearance & Behavior -> System Settings -> HTTP Proxy -> Select Auto-detect proxy settings
Go to Android Studio -> File -> Sync Project with Gradle File

edited Mar 27 '21 at 02:56

Dharman

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answered Mar 27 '21 at 02:51

Pisal UTNGY

147
5

Lance Samaria · Answer 23 · 2022-10-18T17:06:38.007

Part of this answer by @Sadegh is what fixed it for me

Go to Gradle Scripts > gradle.properties

Enter these 6 lines in the gradle.properties file:

systemProp.http.proxyHost=fodev.org
systemProp.http.proxyPort=8118
systemProp.http.nonProxyHosts=*.jitpack.io, *.maven.org
systemProp.https.proxyHost=fodev.org
systemProp.https.proxyPort=8118
systemProp.https.nonProxyHosts=*.jitpack.io, *.maven.org

To dig deeper into the issue, I went inside Android Studio (not your mac), at the bottom I opened Terminal and entered: ./gradlew build --warning-mode all

The exact problem was:

PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

score -1 · Answer 24 · answered Apr 02 '19 at 06:00

-1

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

answered Apr 02 '19 at 06:00

Irshad

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Insecure connections aren't a good idea when you have options – Zoe Apr 02 '19 at 06:03
I agree, But the firewall setting is taken care by the IT department, which I have no control on. What would u suggest as an alternative? – Irshad Apr 02 '19 at 06:11
3

Contacting the IT department and telling them to create/use a firewall that doesn't block basic dev tools – Zoe Apr 02 '19 at 06:48

score -2 · Answer 25 · answered Aug 25 '20 at 22:05

-2

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

answered Aug 25 '20 at 22:05

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

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