I've got elasticsearch-6.6.1 with basic license, installed on one node.
I try to configure security, but when i try setup passwords i get an error :
Unexpected response code  from calling GET http://10.0.xx.xx:9200/_xpack/security/_authenticate?pretty
It doesn't look like the X-Pack security feature is available on this Elasticsearch node.
Please check if you have installed a license that allows access to X-Pack Security feature.
ERROR: X-Pack Security is not available.
I've tried to install x-pack manually, but then :
C:\ProgramData\Elastic661\elasticsearch-6.6.1\bin>elasticsearch-plugin install x-pack
ERROR: this distribution of Elasticsearch contains X-Pack by default
Can anyone help me with this ?