From System Preferences, I open the Java icon and it shows: enter image description here

And that's all. The "Reopen the Java Control Panel" button doesn't do anything. There isn't any separate window anywhere.

macOS High Sierra 10.13.6 (17G65).

  • It should only show the reopen button if you've already opened it then closed it. I'd at least try a reboot to test, & check for Java Control Panel in Activity Monitor.
    – Tetsujin
    Commented Jul 24, 2018 at 10:56
  • @Tetsujin no Java in Activity Monitor. I'll try a reboot.
    – Cœur
    Commented Jul 24, 2018 at 11:28
  • If that doesn't work go to java.com and download an installer and reinstall Commented Jul 24, 2018 at 12:29

1 Answer 1


I'm getting the same thing. And when I try to reinstall it, the Java installer just bounces a few times and never opens a window. Never starts, unable to reinstall it.

I created another profile/account and used it after switching - and the apps that had been failing to start - never use any CPU - would work like they were supposed to.

By now it's pretty obvious something is not right in my home directory, but it's not being intuitive.

  • Just to elaborate, quite a number of programs stopped opening since High Sierra - but work fine on the other profile.
    – Joy Cohn
    Commented Dec 16, 2018 at 1:19

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