Download that DMG file, open it, and follow the installation prompts. First of all, you’ll need to download and install Java for OS X 2015-001.Solution1 (built-In Smart Card Ability): Uninstall ActivClient 6.2.0.x or 7.0.1.x by 'Right Clicking' the Windows logo '4 squares', select Programs and Features (now called Apps and Features), find ActivClient in your list of programs and select Uninstall, restart your computer and try the sites again.On Windows, the Java plugin will be listed as Java(TM) Platform SE and underneath, it will show 'Next Generation Java Plug-in for Mozilla browsers', where refers to the. On Mac OS, the Java plugin is shown as Java Applet Plug-in (on Mac OS X 10.6 or below, it may also be listed as Java Plug-in 2 for NPAPI Browsers).