When I want to launch an app on the device from Xcode, I now keep seeing this:

I also just updated Xcode to Version 12.1, hoping it would solve the problem, but it doesn’t make any difference, I keep getting the same message.

I tried disconnecting and reconnecting the device, but to no avail.

I also removed all the data under ~/Library/Developer/Xcode/DerivedData/, but again with no effect.

Here’s how to fix it.

Method 1: Update XCode

Before you debug with iPhone, follow this mapping table about the version of Xcode and iOS：

Xcode 12.3 → iOS 14.3

Xcode 12.2 → iOS 14.2

Xcode 12.1 → iOS 14.1

Xcode 12 → iOS 14

Xcode 11.7 → iOS 13.7

Xcode 11.6 → iOS 13.6

Xcode 11.5 → iOS 13.5

Xcode 11.4 → iOS 13.4

Download at https://developer.apple.com/download/more/.

If you’re still encountering the error, try to unpair the device within the menu Window > Devices and Simulators, clean Xcode, reconnect and trust the device, then re-run.

Method 2: Add iOS Device Support File

• Download 14.2.zip file directly and after unzip it
• And just copy and paste unzipped folder by path: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/
• Restart the Xcode