Unable to use, install, or delete the iOS 27 runtime

I'm unable to use the iOS 27 runtime in Xcode 27 beta 1. It appears uninstalled, but has no Get button, so I can't delete it, nor uninstall it. Using the Get button in the toolbar results in "Fetching download information..." forever. When I click info and copy information, it says "iOS 27.0 beta (24A5355p) SDK + Simulator (Components absent)." It doesn't show up in any of the xcrun simctl commands for listing devices or runtimes. It doesn't show up in the Add Platforms modal. I was unable to debug this issue with an Apple engineer in person, so they suggested I post here!

Update: xcodebuild -downloadPlatform doesn't work either, even though it does for watchOS

Answered by kylebshr in 890927022

I was able to resolve the issue by specifying an architectureVariant; without one specified, it defaulted to universal, but couldn't find one to install. I realized this when I tried to the same command for watchOS, and it default to arm64.

xcodebuild -downloadPlatform iOS -architectureVariant arm64

Here's a screenshot

I can confirm that I also have the same issue with Xcode 27 Beta 1.

There is no Get button to download the iOS 27 runtime.

However, I have not been able to find a workaround or fix to the problem.

Accepted Answer

I was able to resolve the issue by specifying an architectureVariant; without one specified, it defaulted to universal, but couldn't find one to install. I realized this when I tried to the same command for watchOS, and it default to arm64.

xcodebuild -downloadPlatform iOS -architectureVariant arm64
Unable to use, install, or delete the iOS 27 runtime
 
 
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