Xcode 26 RC

[sebastian-lerner]

FYI we have gotten a confirmation from Apple via our code support request and bug report that the simulator issue mentioned above is a known issue with the IOS Simulator in macOS Virtual Machines, and that it is currently being investigated/worked on internally at Apple.

[carlos-santos-anchor]

@sebastian-lerner Could this be related to?

Tests Hanging on Xcode 26

Goal: We want to upgrade CI from Xcode 16.4 → 26.0.0. Along with this we are moving all of our snapshot testing over to iOS 26, on an iPhone 17 Pro. I have my branch made with all the changes, but when I run our testing suite on CircleCI, it is never able to finish due to it hanging indefinitely. This issue only occurs on my branch thats set up to migrate over to Xcode 26, and does not happen on our main branch. I have seen the posts about the iPhone simulator booting issues on Xcode 26, and I…

[xzoky]

For anyone still struggling with simulators failing to boot, updating to Xcode 26.1.1 appears to have made things much better for me.

I’m using this suggestion from the Xcode release notes:

Known Issues

• Simulators may fail to boot during the first build after upgrading macOS. (152328794)

  Workaround: Execute xcrun simctl runtime dyld_shared_cache update --all prior to booting the simulator to ensure dyld shared cache generation has completed.

cc @sebastian-lerner