Hi Greg Ubiaga,
thank you for posting on the Microsoft Community Forums.
Based on the description, I understand that your issue is related to Java installation.
Since there are no engineers dedicated to Java installation in this forum. In order to be able to deal with your questions quickly and efficiently, I recommend that you repost your questions in the official forum for Java installation, where there will be a dedicated engineer to provide you with a professional and effective response.
Have a nice day.
Best regards,
Lei