To clarify, this is a Win 10 Client virtual machine, running on a Server 2016 TP2 machine, correct? Also, you are saying that when you click on Action Center icon, nothing happens, but if you get to Security and Maintenance via the Control Panel,
it works as expected?
My confusion is this: the Security and Maintenance window you navigate to via Control Panel is not the same thing as the Action Center. The Action Center may, at times, have messages from Security and Maintenance, but it also contains messages from many
other sources.
Your issue is that when you click the Action Center icon, nothing happens. You are unable to open the Action Center. Is this a correct description of your problem?
You also mentioned that you are on Build 10074 for your Client machine. That is a fairly old version, and I recommend you update to the latest (RTM.) The update should be available through Windows Update. Once your machine is current, re-test this and let
me know what happens.
Thanks,
Jess Cunningham
Windows Beta Team