Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Question

I have a class that will download a file from a https server. When I run it, it returns a lot of errors. It seems that I have a problem with my certificate

Answer 1

Simple Steps that I followed.

problem: I was trying to connect to an endpoint(https://%s.blob.core.windows.net) using a simple java class(main method).

So I was getting this certification issue as mentioned above, in the question.

Solution:

1. Get the certificate using a browser(chrome). To do this paste your endpoint URL in the browser and enter. Now you will see a lock icon, click on that -->certificate--> details --> copy to files--> download it.

2. open the cmd(i am using windows) as admin and then navigate to the directory where you have downloaded the .cer file.

3.(Optional)If you are using multiple JDK in the same machine then change your JDK version the same as you are using in your application.

4. Now use the below command

keytool -import -alias mycertificate -keystore "C:\Program Files\Java\jdk-11.0.5\lib\security\cacerts" -file myurlcrt.cer

5. Give the default password: changeit

6. Trust this certificate: yes

And you are done.

Thanks!