iPhone Simulator Can't Be Lauched?

Question

When I press Run on Xcode with other tasks already running, the following message appears:

Simulator in Use. The Simulator can't be launched because it is already in use.

I checked with some friends and when they press run, Xcode automatically stop the tasks running and run the app you want. How can I configure this here?

Thanks in advance,

Answer 1

Quit the simulator and try again. if not working quit the Xcode and try again.

Answer 2

If you have two projects open in Xcode and one is running on the simulator, you can't run the other. Go through each project window and see if any are running, and if they are, press the "Stop" button on the top left:

Answer 3

In most cases Josh answer solves this problem. But just now happened to me to have only one project in Xcode and trying to clean and built it did nothing. For me (this time) the solution was to:

1. Right click the simulator from dock and click Quit.
2. I did the same for Xcode (right click on Xcode in Dock and clicked Quit).
3. After that just re-open Xcode and voila!

It works!!!