Windows 8 Store apps deliver information on periodic basis to its users. However, at times the data crosses specific usage limit. When yuo reach a certain data usage limit, your apps would notify you of new updates only in case you have cleared the data limit. Make sure you sign in as an administrator to perform the following steps. Here is how you can do it in Windows 8:
1. Open up Metro Menu by pressing the Windows Hot Key. Now press Windows Hot Key + I to bring the slide pop out. Now click Tiles
2. Under Data used for tile update, click on the arrow to set data usage limit.