Wont Install

[jamroco2000]

When trying to install I get

Unable to read repository at http://www.gensthaler.de/eclipse/content.xml.

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

[gensth]

Hi jamroco2000,
indeed this url is not valid. Did you install the plugin as described here on the github page or from marketplace or any other method?
Background: the www.gensthaler.de/eclipse redirects to https://gensthaler.de/userfiles/eclipse/ where the file https://gensthaler.de/userfiles/eclipse/site.xml exists. A content.xml doesn't exist. Where did you geht the URL from?
Best regards, gensth

[B-Ent]

I get the exact same error after having tried all the methods you suggest.
I am using Neon.3 (4.6.3) on Windows 7 pro
thank you for any help

[gensth]

Hi B-Ent,
sorry, I'm out of ideas how to help you, even after reevaluating the install process and digging.
Do you also get the message "Unable to read repository at ..."? Do you use a proxy?
A potential helpful references in the internet to the certification-path-problem could be:
https://sourceforge.net/p/eclipse-cs/discussion/274377/thread/5147e726/?limit=25
Please post any hints how to solve this installation issue.
Best regards, gensth