that error code means u dont have permission to write to that location
open that folder from explorer ("D:\windowsapps" if its drive D)
if u cant find that folder, create one
right click that folder and select Properties -> Security -> Advanced -> Add -> Select a Principal -> In the edit box type PCName\Users then click Check Names. It should accept that. Click Ok. Then it'll ask which permissions you want to give. Check Full Control, click Ok, then Apply, restart the Store (Alt+F4 while within it) and it should work