I get errors while installing or updating a plugin from an update site $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#i-get-errors-while-installing-or-updating-a-plugin-from-an-update-site">
Unable to read repository at … sun.security.validator.ValidatorException: PKIX path building failed
SSL Handshake: invalid SSL session
Most probable causes for the above errors are:
Outdated certificate authority truststore in the Java Runtime Environment (JRE). In this case the easiest fix is to download a newer DVT distro containing an up to date JRE.
Proxy or firewall filtering / altering secure connections. In this case you can ask your CAD/IT team if any filtering is taking place or you can try to download a zipped update site and install the plugin from that archive.