A company has 10 client computers that run Windows 8. You are responsible for technical support. You
purchase a support tool from the Windows Store while logged in with your Microsoft account.
You install the support tool on several client computers.
Three months later, you attempt to install the support tool on another client computer. The installation fails.
You need to ensure that you can install the support tool on the client computer.
What should you do?

A.
On the computer on which you want to install the tool, synchronize the Windows Store application licenses.

B.
Disassociate your Microsoft account from the computer on which you want to install the tool. Then
reassociate your Microsoft account with the computer.

C.
Reset your Microsoft account password.

D.
Log in with your Microsoft account and remove a computer from the Windows Store device list.

Explanation:
You could prevent installation of mass storage devices but use the “Allow administrators to override” setting
to ensure an administrator could get the flash drive installed.
http://windows.microsoft.com/en-us/windows-8/windows-store-install-apps-multiple-pcs
You can remove a PC from your account when you’re signed in to the Store on any PC.
After you’ve removed a PC from your account, you won’t be able to use the apps that were installed from the
Store on that PC.
Further information:

http://windows.microsoft.com/en-us/windows-8/what-troubleshoot-problems-app
Troubleshoot problems with an app
Sync app licenses
If a license for an app is out of sync with the license installed on your PC, the app might stop working.