Ensure the device is connected to a power source during the app update.
Using the Mobile Broadband connection to download an update impacts your data usage allowance and may result in additional charges. It's recommended to utilize a Wi-Fi connection, if available.
From the Start screen, tap or click Store. If not available, swipe up (starting from the middle of the screen) to display the Apps screen then tap or click Store. If using a mouse, click the Down arrow icon to view all apps (may require clicking on the slide bar at the bottom of the screen to move the screen over to the right).
From the right edge of the screen, swipe left to display the charms menu. If using a mouse, move the pointer to the upper or lower-right corner of the Start screen then move up/down. Alternatively, press the Windows+C keys ( +C) located on the physical keyboard (if available).
Tap or click Settings.
Tap or click App updates.
Tap or click Check for updates.
If an update is available, tap or click View details (if applicable).
Select (check) the desired update(s) then tap or click Install (located at the bottom).