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Simulator won't start, stuck on checking "Simulator" after updating my Xcode to 8.2.1

I updated my Xcode to 8.2.1 after trying to run my code, but the simulator won't start, it got stuck checking the "simulator", taking another two days until it could work. Can anyone help with this?

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This is a known bug for Mac computers that do not support METAL. (For more information: Xcode 8.2 simulator issue )

As a workaround, try restarting the project (clear Derived Data). If not allowed, then ....



Use the latest Xcode tool: Xcode 8.3.2

(Completely uninstall (uninstall) Xcode and supporting files from your system before installing the new tool)

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I just left an existing project in Xcode (8.2.1) and then created a new project and tried to run the simulator it works!



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