Topic

During server installation, RabbitMQ failed to install leading to the server installation failing with fatal error 1603 and rollback.

Instructions 

Cause:
Possibly script execution rights or lack of permissions for the logged in user.
 
Solution:
To resolve the issue, do the following.

1. Open registry editor.
2. Locate registry key Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Ericsson\Erlang
3. Delete the registry key.
4. Save and close Registry Editor.
5. Reattempt the server installation.

If installation was successful but RabbitMQ service not seen in Services or RabbitMQ admin not accessible, do the following:

1. Open PowerShell.
2. Navigate to C:\Nintex\installer-assets\config\prod\scripts
3. Run command ./configureAll.ps1 -h “<installed directory>:\Nintex”
4. After execution completed, verify that RabbitMQ service is seen in Services
5. Restart Nintex services.