To uninstall RabbitMQ and Erlang from the machine completely, do the following:

1. Open the Windows Control Panel.
2. Double-click Programs and Features.
3. In the list of currently installed programs, right-click RabbitMQ Server, and then click Uninstall.
4. In the list of currently installed programs, right-click Erlang OTP, and then click Uninstall.
5. Open the Windows Task Manager.
6. In the Task Manager, look for the process epmd.exe. If this process is still running, right-click it and then click End Process.
7. Delete all the installation directories for both RabbitMQ and Erlang.
8. Delete the file C:\Windows\.erlang.cookie (if present).
9. Go to the User folder: C:\Users\[username], and then delete the file .erlang.cookie.
10. Also in the User folder, go to AppData\Roaming\RabbitMQ.
11. Backup the Log folder to a secure location, and then delete the folder.

RabbitMQ卸载重新安装