All metro/modern apps works fine on my Surface 2 Pro Windows 8.1, including calendar, mail, and Facebook. However, when I open the Task Manager, I notice that Store Broker (wshost.exe) takes around 31% CPU usage and easily hits 100%, even don’t open any store app. If I try to download new app or game from market or install updates, it just spins the wheels and shows error “Your purchase couldn’t be completed” message. My tablet has been installed Kaspersky Internet Security and also applied lastest Windows updates, and it seems to be a new bug. Any way to resolve the problem?
Many people have experienced the same problem about that Windows 8.1 Store Broker (wshost.exe) process causes the cpu high usage and kills the CPU. Making clean install the OS still can’t fix the issues. Microsoft doesn’t release any related patch for that definitely, so you have to use a temporary fix to get rid of it.
* If the Microsoft Store feature is enabled, the system will be messed by the Store Broker. So you need to disable access to the Store for all users.
1. First sign in as an administrator. Head to Start Screen, type regedit.exe and press Enter.
2. Navigate to the following key:
3. In the right pane, double-click on the RemoveWindowsStore, and change its value from 0 to 1.