If the applicatio icon appears in the dock, press the CONTROL key on your keyboard and then click on the icon, choose Quit.Here are a few ways you can stop a running application:
The following Microsoft support article helped to solve my problem. My last hope is to Google for the message and fortunately, it is a known issue. I thought I had just mess up the MacBook Air. But to my horror, the message box won’t go away. Switched back to message box and clicked on the Continue button. I switched to Safari, closed Safari by clicking on the red button with an X in it.
Just when it is about to complete (it was running some script), a message pop-up that said “You must quit the following application before you can continue”. I didn’t quit the Safari browser and started with the Office installation. Before she passed the MacBook Air to me, she had the Safari browser opened.
I must admit that I am totally new to the Mac World. I tried to help her install Office for Mac 2011 and ran into a small hiccup. My wife received her MacBook Air today after waiting for almost a week.