The RabbitMQ service is unable to read/write to the .erlang.cookie file because of permissions between the user the service is running under versus what it was installed under.
Try making a local machine account for the service to run as. While logged in under that newly created account, from an elevated command prompt run
"C:\Program Files\RabbitMQ Server\rabbitmq_server-3.6.4\sbin\rabbitmq-service.bat" install
For older systems use the following command:
"C:\Program Files (x86)\RabbitMQ Server\rabbitmq_server-3.3.4\sbin\rabbitmq-service.bat" install
Then change the RabbitMQ service to logon with the Local Account and restart it.
This generally only affects installs within a Domain or on Enterprise systems and specifically where users have their homedrive set to a mounted network drive.
Article ID: 103
Created On: Mon, Feb 16, 2015 at 9:39 AM
Last Updated On: Wed, Nov 1, 2017 at 10:34 AM
Authored by: Grant Gartland [firstname.lastname@example.org]
Online URL: http://kb.trms.com/article/error-from-rabbitmq-about-unreachable-endpoints-103.html