I upgraded to Acumatica 26R1 from 25R1. Executing the installer, if required us to make sure RabbitMQ is up and running and that I have an account which I can provide the installer with to authenticate. This post describes the problems I had and how I eventually had the messaging configured, Upgrading from 2025 R1 to 2026 R1 - RabbitMQ - Assistance Setting-up or Connecting to Existing Instance | Community.
A consensus directs me to comment out RabbitMQ for messaging which I did.
When I follow these steps locally, my Acumatica instance starts and functions, but the messaging is failing:
Page is not available
To use the Business Events form, install MSMQ on the server and set the EnablePushNotifications key to true in the appSettings section of the web.config file of the application.
Questions:
What is the Acumatica 26R1 direction (and supported) for messaging? Is it MSMQ or RabbitMQ? We do have RabbitMQ up and running on our application server.