"Swipe in from the right edge of the screen (or, if you're using a mouse, pointing to the lower-right corner of the screen and moving the mouse pointer up), and tap or click Settings."
The people who write these things always forget an important step: GETTING TO A POSITION WHERE THE SETTINGS MENU CAN EVEN BE ACCESSED.
As it stands my computer is stuck at 'We couldn't complete the updates', restarts, then comes right back to that point. I can't 'point to the lower-right corner and click Settings' because my computer isn't at a state where that's an option.