... after that ... WinRT IE will never assist you again with Java and send you to legacy IE. The pages will just fail in IE.
BTW I did not override the checkbox - but kept it set to get prompted (for that particular site). However, WinRT IE keeps failing Java assists for any sites with Java - even pages I have not visited before?
Bug report because I quickly tested this as answer to this question on Win8: http://social.technet.microsoft.com/Forums/windows/en-US/217c6b32-f208-4dcb-ba2e-2b61683f5426/how-can-i-get-java-to-work-in-metro-internet-explorer-
... because I had just installed Windows 8.1. So interested if a bug was still there in WinRT/Metro IE.