Java Problems Some problems have been reported for questions requiring Java™. Can't Open Java Questions in ChromeSome questions, including questions using JME, require the Java browser plugin. Google® Chrome™, version 45 and later does not support the NPAPI plugin required to run Java. Java Questions Report a Certificate ProblemRecent versions of Java report a problem with the certificate when you attempt to open a question requiring Java. Problems Installing Java on macOS/OS XSome questions require the Java plugin. On macOS™/OS X®, the version of this plugin that you can install is dependent on the version of macOS™/OS X® you are using.