Fix Xcode error ‘Unable to boot iOS Simulator’


Xcode is a one-stop development app for OSX and iOS devices, including all Macintosh Desktops, laptops, iPhones, iPads, and iPod touch.

Note: I Assume you are on OSX Yosemite 10.10.3 or the Latest Operating System & Xcode 6 or later installed.

With the release of Xcode 6 and later, while developing and running your iOS app in iOS Simulator on your Mac, you may encounter a bug like this: ‘Unable to boot iOS Simulator’ with a blank screen.

Unable to boot iOS Simulator in Xcode

Here is how to fix it

Solution 01:

Select iOS Simulator, then go to top Menubar > iOS Simulator > Reset Content and Settings > Reset (On command prompt, press reset)

Reset Content and Settings of iOS Simulator for selcted device xcode macintosh

This function will delete all data entered by you & it will reset the selected iOS Simulator device to its original factory setting for iOS Simulator.

Solution 02:

If Solution 01 doesn’t work, it means your Xcode installation is buggy or has errors.

Step 01:
Delete Xcode from your Application folder

Step 02:
Empty your trash

Step 03:
Reboot your system

Step 04:
With the help of ‘Disk Utility’, verify your Macintosh HD for Disk Permission & then Repair your Disk Permissions for your selected Macintosh HD

Step 05:
Now, install Xcode from the Mac App Store. Your problem should be fixed with a fresh installation of Xcode.

Hope it helps,

Thanks & Regards
Mandar Apte

Published by Mandar Apte

Mandar is a Mumbai-based multi-disciplinary designer with UX/UI, Logo, Symbol, and Brand Identity design expertise. He currently runs his Mudrkashar Linguistic Apple iPhone, iPad, and Mac app business in the heart of Mumbai city.

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  1. Thanks , after trying several other solutions, your solution worked 🙂 So a big thanks

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