How do i fix "emulator: Failed to sync vcpu reg" error in ionic mac android emulator error

Issue

ionic build android command failed with the error:

emulator: Failed to sync vcpu reg emulator: Failed to sync HAX vcpu context

Solution

If docker is working, stop it.

For example:

$ docker-machine ls

NAME   ACTIVE   DRIVER       STATE     URL
dev    *        virtualbox   Running   tcp://192.168.99.104:2376

$ docker-machine stop dev
$ docker-machine ls

NAME   ACTIVE   DRIVER       STATE     URL
dev    *        virtualbox   Stopped

Answered By - izzet altinel