The "X" button appears in the upper right corner of program windows, and it closes programs to clear and manage your device memory. To enable the "X" button, follow these steps:
- From the Today screen, tap Start.
- Tap Settings.
- Tap the Systems tab.
- Scroll down and tap Task Manager.
- Tap the Button tab.
- Verify the the Enable the "X" button to end running programs check box is selected.
- Tap one of the following options: