Elasticsearch wont start with X-Pack plug-in on Windows

[TimV (Tim Vernum)]

@HarryCrosby

I then set xpack.ml.enabled: false in elasticsearch.yml and ran elasticsearch.bat again. Unfortunately, I keep getting the same exception and Elasticsearch won't start.

My guess is that the elasticsearch.yml file you're editing isn't the one Elasticsearch is reading from.
Do you have a ES_PATH_CONF environment variable?