Can I turn off or disable Store App from Windows 10?

From https://social.technet.microsoft.com/Forums/en-US/9514c7a6-991b-48b0-95ab-33edfc029c52/windows-10-enterprise-disable-store-feature?forum=win10itprogeneral:

The WinStoreUI.ADMX & WinStoreUI.ADML, are missing from the Win10 template download: http://www.microsoft.com/en-us/download/details.aspx?id=48257

But since the settings are no different from the Win8.1u1 templates, you can grab the missing files from the Win8.1u1 download: http://www.microsoft.com/en-us/download/details.aspx?id=43413

And this policy has apparently been rendered useless except on Windows 10 Enterprise/Education

https://support.microsoft.com/en-us/kb/3135657

guess the only other option is to uninstall the store appx:

from powershell:

to remove the existing Appx for the currently logged-in user:

Get-AppxPackage *WindowsStore* | Remove-AppxPackage

to remove the provisioned Appx (only applies to future users without a current profile):

Get-AppxProvisionedPackage -Online | Where-Object {$_.PackageName -like "*WindowsStore*"} | Remove-AppxProvisionedPackage -Online

n.b. this option should only be used if the full ramifications of removing provisioned packages are understood.. Once a provisioned app is removed, it is hard to get back

more info: How do you forcefully remove apps in Windows 10? and Restore Microsoft Store application in Windows 10

Here's another solution: http://www.thewindowsclub.com/windows-store-applications-manager

found some more policies that are likely soon to be enabled only in enterprise: https://dirteam.com/sander/2015/05/05/knowledgebase-important-issues-in-windows-server-2016-technical-preview-2-release-notes/

In this release, the following Group Policy Objects are not implemented:

Specify intranet Microsoft update service location

Do not connect to any Windows Update Internet locations

Allow signed updates from an intranet Microsoft update service