iOS simulator is not launching

Question

I am facing this problem again and again. Anybody can give the solution to this problem except reboot the Mac?

I have already tried these tricks

Answer 1

None of the above solutions helped me.

I also tried

sudo killall -10 com.apple.CoreSimulator.CoreSimulatorService

And even after clean Xcode reinstallation my simulators continue closing after launching.

So i removed all simulators from Window - Device & Organizers

And then added new one's

And the problem has gone

Answer 2

In Xcode select Product > Scheme > Edit Scheme > Run > Options tab.

Confirm Launch due to a background fetch event is not selected.

See the image below ...

Answer 3

I also have this issue and googled this, which redirect to this question. Mine was xcode10 What i have done is as follows

1. Quit the simulator & Xcode.
2. Opened Activity monitor, selected cpu option and search for sim, killing all the process shown as result.
3. Then fired up the terminal and run sudo xcrun simctl erase all. It will delete all content of all simulators. By content if you logged in somewhere password will be gone, all developer apps installed in that simulator will be gone.

Doing these resolved my issue. Hope it helps.

Answer 4

The following solved my issue

1. Open edit scheme

2. Check that lunch is automatically

Answer 5

Long shot but in my case I just moved my Xcode to Applications and restarted Xcode.

Answer 6

In my case tmp directory was not there for some reason, creating it giving adequate permissions saved my day.

sudo mkdir /private/tmp
sudo chmod 1777 /private/tmp

https://stackoverflow.com/a/48075384/6919038