hide or completely disable start button in win10

Maybe I am missing something but with Inteset running on my Win10 Pro system, I can still right-click on it and access the sub-menu to get to things like Run, Control Panel, Command Prompt.

How can I disable that functionality?

Be sure your running Secure Lockdown on an administrator account. The Windows Start button is completely disabled (unless you're running Secure Lockdown - Multi App Edition and you've enabled the Windows Start menu).

Yes that was my issue. I didn't realize I was testing it under a non-admin account.