GET /_cat/plugins does not show ingest-attachment plugin

I installed the ingest-attachment plugin using bin\elasticsearch-plugin.bat

In Kibana, however, this plugin does not show up when issuing GET /_cat/plugins

I'm wondering why. Also, I want to issue more commands using Kibana for ingesting documents, but I cannot since the plugin doesn't seem to be recognized as being installed.

I see this was covered by David Pilato in Ingest attachment Plugin exception :

The trick is to stop and then start the elasticsearch service.