It appears to be where the JRE caches downloaded applets. When you deleted temporary Internet files, did you do so from the Java control panel?

1] Clear Java cache It is the first thing you must do if Java is not working on your computer. At times, the old cache could cause issues running the program.

These posts will show you how to clear the cache in Edge, Firefox, Chrome. 2] Check Java Security settings To do this, first, go to Control Panel. Then adjust the view to Small Icons from the ...

Red Hat's proposed specification, designed to reduce the need for separate Java distributed caches, has generated debate within the JCP.