Xcode 7.3 error: could not attach to pid:"983"

Question

When I build and run on a simulator in Xcode 7.3. I get the error could not attach to pid:"983":

Some times I'm getting this error. After trying to run 2 to 3 times it works properly. Anyone help me why I am getting this error?

Answer 1

I met the same problem yesterday and solved it.

1. clean the project (command+shift+k)
2. restart simulator if you use it
3. re-build
4. run it again.

I hope it works also for you.