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Upgrading from 2025 R1 to 2026 R1 - RabbitMQ - Assistance Setting-up or Connecting to Existing Instance

  • May 22, 2026
  • 5 replies
  • 97 views

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Hi Acumatica People,

 

I am trying to upgrade a non-production environment to 2026 R1 from 2025 R1. I have historically commented out section in the web config file associated with running RabbitMQ.

 

I downloaded the msi, builds.acumatica.com - /builds/, and kicked-off the installation and it worked.

It starts the configuration wizard and I select “Upgrade” and I receive this dialog box: 

 

 

Then I receive a RabbitMQ configuration dialog box.

 

“Choose whether the system will automatically set up RabbitMQ on the current servoer or if you will provide connection settings to connect to an existing instance.”

 

I opted to “Set up RabbitMQ on this server automatically”

 

It tells me that it is unable to connect to RabbitMQ and that I should try an existing RabbitMQ instance.

 

I would prefer to setup RabbitMQ on the server automatically, using a service account for “Acumatica things”. How do I do this?

Best answer by PatrickBacon

-----------This solution was arrived at from help from a colleague-----------------------

  1. Created local admin account which will run the rabbitmq service.
  2. Stop the RabbitMQ service.
  3. Updated the service to indicate that the local admin account will run the rabbitmq service.
  4. Confirm the erlang places the cookie file at C:\users\local_admin_account_running_rabbitmq\.erlang.cookie
  5. Start the service for RabbitMQ.
  6. With a browser, navigate to its site, http://localhost/port (port can be viewed by looking at the logging at %APPDATA%/RabbitMQ/). It also often times 15672.
  7. For more inspection of attributes of the RabbitMQ environment, one can navigate to the sbin file and invoked various rabbitmq commands to understand the configuration (see here, https://www.rabbitmq.com/docs/windows-configuration).
  8. Here is my active RabbitMQ environment. I created a new admin account in lieu of using guest.

 

 

  1. Running the upgrade for the website, I provide the url, listener and main ports and the new Acumatica user when prompted.
  2. The Configuration Wizard shows the installation finished:

 

 

 

 

5 replies

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  • Author
  • Varsity I
  • Answer
  • June 4, 2026

-----------This solution was arrived at from help from a colleague-----------------------

  1. Created local admin account which will run the rabbitmq service.
  2. Stop the RabbitMQ service.
  3. Updated the service to indicate that the local admin account will run the rabbitmq service.
  4. Confirm the erlang places the cookie file at C:\users\local_admin_account_running_rabbitmq\.erlang.cookie
  5. Start the service for RabbitMQ.
  6. With a browser, navigate to its site, http://localhost/port (port can be viewed by looking at the logging at %APPDATA%/RabbitMQ/). It also often times 15672.
  7. For more inspection of attributes of the RabbitMQ environment, one can navigate to the sbin file and invoked various rabbitmq commands to understand the configuration (see here, https://www.rabbitmq.com/docs/windows-configuration).
  8. Here is my active RabbitMQ environment. I created a new admin account in lieu of using guest.

 

 

  1. Running the upgrade for the website, I provide the url, listener and main ports and the new Acumatica user when prompted.
  2. The Configuration Wizard shows the installation finished:

 

 

 

 


Chris Hackett
Community Manager
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  • Acumatica Community Manager
  • June 4, 2026

Thank you for sharing your solution with the community ​@PatrickBacon!


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  • Author
  • Varsity I
  • June 4, 2026

​*** I could not place this text in my post above ***

 

Still some issue with launching at this time:

I can log in to RabbitMQ’s site with the account I created for Acumatica’s RabbitMQ usage which was shared during the website installation: 

 

Sever Error 

Connection to RabbitMQ failed

PX.Data.PXEception Connection to RabbitMQ failed.

 


Chris Hackett
Community Manager
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  • Acumatica Community Manager
  • June 4, 2026

Then I’ll unmark as resolved for now😁


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  • Author
  • Varsity I
  • June 9, 2026

FWIW, the pre-existent solution for rabbitmq and acumatica is to comment out the element associated with using rabbitmq in the webconfig file. This now works. This is strange because during execution of the Acumactica configuration wizard for 26R1 during the App upgrade, it was forcing me to make sure it can see rabbitmq and connect to it…. but after I have upgraded the app and database; I can comment it out and things are working.