Disable the Windows Store in Windows 8 and Windows 8.1

I have been using Windows 8 for a good while now and found that I have very little use for the Windows Store. While I am a big fan of the new toast notifications for Windows Store applications and even some applications in particular (ABC News for example), it is hard to justify their usage as I do not have a touchscreen - something that would make the experience much more enjoyable.

For these reasons and others, I have decided to disable the Windows Store services and put the resources to better use. You may also wish to do the same, so I have created this little tutorial. Note that while there are already tutorials to do this on the Internet, most of them are not as thorough as this one intends to be. See the Bleeping Computer tutorial or the How-To Geek tutorial for examples of this.

Important! Export the Windows Registry keys that you decide to modify before making changes to the Windows Registry, and create a System Restore point before continuing.

Disable access to the Windows Store via Group Policy or Windows Registry Editor
For all users:
Open the Group Policy Editor (gpedit.msc) and navigate to Computer Configuration - > Administrative Templates - > Windows Components. Open the Store entry in the right-hand pane, and enable the Turn off the Store application setting.

Alternatively, open Registry Editor (regedit.exe) and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsStore (if the WindowsStore key does not exist, create it). Create a new DWORD value in the WindowsStore key called RemoveWindowsStore. Set its value to 1.

For current user only:
Open the Group Policy Editor (gpedit.msc) and navigate to User Configuration - > Administrative Templates - > Windows Components. Open the Store entry in the right-hand pane, and enable the Turn off the Store application setting.

Alternatively, open Registry Editor and navigate to HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\WindowsStore. Create a new DWORD value called RemoveWindowsStore. Set its value to 1.

Disable the Windows Store service
Open Registry Editor and navigate to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WSService. Select the Start value in the right-hand pane and set its value to 4.

Disable the services associated with the Windows Store and Windows Store applications
This next step is important because, as other users have mentioned, these services are known to consume valuable system resources - a situation made worse if you are no longer able to open the Windows Store (after performing the steps above).

Disable Time Broker
In Registry Editor, navigate to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TimeBroker. Select the Start value in the right-hand pane and set its value to 4.

Disable System Events Broker
The task scheduler has a dependency on the system events broker, disabling it is asking for problems - Joe User.

In Registry Editor, navigate to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SystemEventsBroker. Select the Start value in the right-hand pane and set its value to 4.

Unpin the Windows Store tile from the Windows Start screen
If the Windows Store tile is pinned to the Start screen, right click the tile and select the Unpin from Start option that appears in the application bar.

source: http://www.neowin.net/forum/topic/1205121-disable-the-windows-store-in-windows-8-and-windows-81/