Android emulator-5554 offline

Question

I\'m having a problem with emulator-5554, it keeps telling me it is offline.

When I do a adb devices from the command line it says

Answer 1

on linux or mac the port thats blocked will emulator-id + 1 so 5555 so: sudo lsof -i :5555 will show you the pid of process that are taking the port (should be the second column) so to kill it: sudo lsof -i :5555 | awk '{print $2}' | xargs kill

then adb (fake) devices will no longer show on the list