Windows 8.1 upgrade tile errors

I upgraded yesterday and it took almost nine hours! I lost my internet connections but after another call for updates it was recovered..
My concern at present is that I have the "store" tile but cannot get to the "store" as it blips and goes to blue. Another thing is some of the tiles on the start screen have a white cross on a black circle. When clicked they warn you cannot access the app and should consult with the System Administrator to remedy. As I am the only user who do I consult with? If anyone can help me I would be grateful...

Thanks..​