Hi there, We’re encountering this error in all of our builds when using the latest Xcode and macOS: The Metal Toolchain was not installed and could not compile the Metal source files. Download the Metal Toolchain from Xcode > Settings > Components and try again. In short, all builds are failing. I’ve tried fixing this by installing Metal and applying other solutions, but none of them worked reliably. Is there a way to ensure that the Metal Toolchain is installed on the CI machine?

When running an Xcode Cloud workflow pinned to Xcode 26.1, macOS 26.1 and using a Test Destination for iPhone 15 Pro and iOS 26.1, the following error appears in the xcodebuild-build-for-testing.log: 2025-11-13T19:08:31.855137440Z xcodebuild: error: Unable to find a destination matching the provided destination specifier: 2025-11-13T19:08:31.855318998Z { platform:iOS Simulator, id:704F84C8-025F-4F70-B2D9-FF19B7DC098F } 2025-11-13T19:08:31.855362640Z 2025-11-13T19:08:31.855370957Z Ineligible destinations for the "Inbound" scheme: 2025-11-13T19:08:31.855381964Z { platform:iOS, id:dvtdevice-DVTiPhonePlaceholder-iphoneos:placeholder, name:Any iOS Device, error:iOS 26.1 is not installed. Please download and install the platform from Xcode > Settings > Components. } This can be fixed if ci_pre_xcodebuild.sh is updated with the following: # Get Xcode major version # `xcodebuild -version` returns something like: # Xcode 26.0.1 # Build version 17A400 XCODE_VERSION=$(xcodebuild -version | head -n 1 | awk '{print $2}' | cut -d. -f1) if [ "$XCODE_VERSION" -ge 26 ]; then if xcodebuild -downloadPlatform iOS >/dev/null 2>&1; then echo "iOS platform is installed" else echo "iOS platform is not installed. Failing the build." exit 1 fi fi Changing the workflow to use "Latest Release" of Xcode (26.1), macOS (26.1) and the Latest Test Destination iOS (26.1) version provided also does not work.

I'm using Xcode Cloud to build for internal TestFlight testing. But it stuck in Archive. No warning or error. Unable to complete the workflow. What could be causing this? I have absolutely no idea what to do now.