I am using build 10240 of windows 10. It was working fine when upgraded it from previous build 10130 but now I am not able to open start menu, store app. The icons in the taskbar like Notification, volume, wi-fi, clock are also not opening when I click on them. Can this be resolved? Please help. Attaching a screen shot of the error which pops up when opening Store app, I feel if that is resolved all of them will be.