I am trying to run emulator on my android studio 8.14. When I click run it says it is already running. Any help would be appreciated.
Go to the down arrow and click on the "Show on Disk" link like attached image. You will get the list of all files, remove the file "hardware-qemu.ini.lock" and start again.
It works for me hope it will work for you too.
If "adb kill-server" dont work try killing the adb from System monitor app of ubuntu:
System monitor->processes
All processes will be listed here end adb from here, must be in the top of the list.
C:\Users\.android\avd
follow the path and open Emulator directory and delete all.lock
extension folders.
Just follow the tips from Android Studio ... Delete the file corresponding to your avd and recreate it.
This happens when the virtual device is shut down in an unexpected state.
In my case the emulator looked fine but it was hung.
Just killing the emulator and trying again did the trick.
Follow the instructions on the error and go to your
C:\Users\directory\.android\avd/Nexus_5_API_24.avd/*.lock
and delete all files with the .lock extension and it should work.