unable to install subclipse with Eclipse neon3 64 bit on Windows 7 64-bit

Question

I am trying to install Subclipse plugin from Eclipse Marketplace on Windows 7 64 bit Enterprise version on Eclipse Neon 3, 64 bit version.

Unable to read repository at https://dl.bintray.com/subclipse/archive/release/1.12.x/content.xml.

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

I also tried to install via Help → Install New Software and added the link: https://dl.bintray.com/subclipse/releases/subclipse/latest/. This failed too.

How do I install this plugin? What are the alternatives?

Solution 1

Can you connect to internet at all through Eclipse?

Open the internal webbrowser. In Eclipse: Window -> show view -> Other -> General: Internal web browser. Look up any normal adress, is it working? Can you connect to another update site? Try for example Eclipse Emma: http://update.eclemma.org/ Do you see anything there?

What are your proxy preferences? Go to Window -> preferences -> General: Network connections.

The active provider:

Specifies the settings profile to be used when opening connections. Choosing the Direct provider causes all the connections to be opened without the use of a proxy server. Selecting Manual causes settings defined in Eclipse to be used. On some platforms there is also a Native provider available, selecting this one causes settings that were discovered in the OS to be used.

If internet is working fine outside of Eclipse, try changing to Native. After that, try Direct.

I have encountered problems where an update site would not load, then I had to remove it and add it again. This forces Eclipse to reread the contents of the site even if it has a cached copy. So, if you still get no connection to the indigo update site, but everything else is working, try that. Go to Window -> Preferences -> Install/update: Available Software sites. Then remove and add the indigo site. Just remember to copy the adress so you can add it again.

Go to Window -> Preferences -> Install Update -> Available Software Sites => select the entry and click the "Reload" button to the right. This is sometimes also helpful when you have a local update site for testing custom plugins

Solution 2

Go to Help > Install New Software ... > Add Then Add this Link http://subclipse.tigris.org/update_1.6.x Check all the boxes then click Finish

You are probably in a company network that they are using some security protocoles; Otherwise Downloading then Installing is permitted. I hope it works for you

Solution 3

In my case I was not able to install due to "error SSL handshake" connecting to https://dl.bintray.com ... Although the root certificate is inside the truststore (cacerts) of the jvm I was using

For some reason, my version of eclipse (STS4) is not using this truststore, I edited the .ini config file of eclipse SpringToolSuite4.ini and explicitly put this:

-Djavax.net.ssl.trustStore=/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/cacerts

Solution 4

Use HTTP instead of HTTPS, If you don't want to update the JVM at least to 1.8

E.g.: http://dl.bintray.com/subclipse/releases/subclipse/latest/

The url is still valid

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