Rabbitmq server does not start, saying it\'s already running:
$: rabbitmq-server Activating RabbitMQ plugins ... 0 plugins activated: node wit
I was having this same error @ Win 7, but the solutions above did not worked for me, what did solved was to remove and reinstall the service. Using a console with admin rights:
rabbitmq-service remove
rabbitmq-service install
I hope this might help someone else too