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I am using Xcode 9.2 and 9.4 and not able to run any application on simulator. It always gives me this error Unable to lookup service com.apple.CoreSimulator.host_support: 0x3. I have reinstall both xcode but still same problem. also installed command line tools but still same problem.

Muhammad Murtaza
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1 Answers1

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Updated XCode to 11.3 - didn't help Run simulator and "Erased all content and settings ..." - worked for me.

Simulator started to fail after I cleared DerivedData folder contents.

Chugaister
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