Failed to find or create execution context for description IBScaleFactorDeviceTypeDescription: scaleFactor=2x

Question

My Xcode project suddenly fails to build. The complete error message (sans ids):

Failed to find or create execution context for description IBCocoaTouchPlatformToolDescription: System content for IBCocoaTouchFramework-NineOneAndLater IBScaleFactorDeviceTypeDescription: scaleFactor=2x. These intermediate objects were non-nil

What I have done that may be related:

update Xcode to Xcode Version 10.3 (10G8)
open the project on a @1x MacBook Air after editing on a @2x MacBook (nothing apparent in git commits though)

What I have tried:

clean build folder
delete DerivedData
restart Xcode

score 16 · Accepted Answer · answered Aug 05 '19 at 07:37

16

Try with:

sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService

Make sure Xcode is not running when run above command.

Restart your Mac will also help.

answered Aug 05 '19 at 07:37

carmine

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1

This worked even though I was not using the simulator at all. – de. Aug 05 '19 at 08:33
2

Worked for me as well. That's a really weird bug. – Jesper Bylund Aug 06 '19 at 17:30
I started getting this error as soon as I updated Xcode to 11.7. This solution fixed it for me. – Kenster999 Sep 06 '20 at 05:53
2

Restart worked for me. – ee.bt Mar 15 '22 at 09:42

Failed to find or create execution context for description IBScaleFactorDeviceTypeDescription: scaleFactor=2x

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