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xcode 9 simulator error unable to boot the simulator launchd failed to respond mac os sierra
I ave tried deleting contents from derived data, restarting Xcode , Uninstall and install of xcode etc.
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Unable to boot the Simulator XCode 8. 1 Click the menu. 2 Select Restart... 3 Hold down command-R to boot into the Recovery System. 4 Click the Utilities menu and select Terminal. 5 Type csrutil disable and press return. 6 Close the Terminal app. 7 Click the menu and select Restart....
With release of Xcode 6 & later while developing & running your iOS app in iOS Simulator on your Mac you face with this bug something like this ‘Unable to boot iOS Simulator’ with blank screen. Select iOS Simulator then go to top Menubar > iOS Simulator > Reset Content and Settings > Reset (On command prompt press reset)
The issue here could be that your iOS sims are being launched by some Javascript framework that is incompatible with Xcode 13.3. I'm using all emulators for cross platform development! Sorry if that wasn't obvious - edited the original post to make it clearer. My quick solution was to install version 13.2 again..
Just open xcode -> windows -> devices and simulators, click on the Simulators tab , click New, click on the OS Version dropdown and choose "Download more simulator runtimes", download 15.2 and create a new simulator with 15.2 as OS Version. There seems to have been a problem with the simulator runtime for 15.4 in this xcode version
In this case, launchd is crashing when trying to launch.
This could be as a result of deleting the /private/tmp folder.
To resolve this, I typed the following commands on my terminal:
sudo mkdir /private/tmp
sudo chmod 1777 /private/tmp
I observed these issues sometimes when my mac is not connected to the internet. So here is a solutions list one of them may solve your problem.
Hope this will help you. Thanks
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