I was trying to create additional simulators in Xcode today and it kept failing with a weird error.
And even from the terminal:
After searching for a while, there where some options suggesting I should reinstall Xcode from scratch but I really didn’t want to wait until Xcode finished installing again (it always takes a while). So I came across this post in the Apple Developer Forums that suggested killing the
CoreSimulatorService and everything should work again. Some people there said that worked for them, so I tried it and it worked!
This is the command you should run to fix this error:
sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService
I never had this issue before but fortunately the solution was simple.