Certificate Error trying to reach eclipse download site

I am getting an error trying to reach http://eclipse.sonarlint.org/ from a particular instance running eclipse 4.8.0.


The message look strange to me. Can you double check the URL you have configured as update site? It should not contain content.xml.
Ideally, you should use:

I cut and pasted your link and get same error. I tried uninstalling/reinstalling eclipse. Same error. From a different machine and even from a different instance/version of product on same machine, works fine. Very puzzling.

Very puzzling indeed. As a workaround you can download the update site archive and install offline:

Thanks! I’ll try that.