Here is my Configuration ,
OS - Ubuntu 16.04
Elastic Search - 5.5.0
kibana - 5.5.0
logstash - 5.5.0
and I have installed metric and winlog beats on windows machine.
I can able to see metric and winlog indices.
Then I installed X-Pack and also successfully configured HIGH MEMORY USAGE even I received few notification.
In very next day my Kibana shows no result found and also It did not asked for user name and password.
Please let me know wt am missing here.