iosxcodeios-simulatorxcode26

Older iOS runtime not appearing in Xcode 26 simulator list — "liblaunch_sim.dylib could not be opened"


I’ve installed the latest version of Xcode (26.0) on my Mac mini (M1, macOS 15.6) and downloaded an older iOS runtime using the Xcode settings.

However, when I try to create a simulator using this older runtime, it doesn't appear in the list of available runtimes in Xcode.

When I run the following command in the terminal: xcrun simctl list runtimes I get this message for the runtime in question: unavailable, liblaunch_sim.dylib could not be opened

Has anyone encountered this issue before?

What could be causing this, and how can I resolve it so I can use the older runtime?

What I've tried so far:

  1. Re-downloading the runtime via Xcode
  2. Restarting Xcode and the machine

Any suggestions would be greatly appreciated!


Solution

  • try installing rosetta via softwareupdate --install-rosetta. i had the same issue and when running xcrun simctl list runtimes -v and saw it mentioned a lack of rosetta.