AQ_KB_01_All devices are offline – last seen field is not updated anymore

Problem

All devices are offline. The last seen column in the devices list is not updated at all.
However, communication between devices and server seems ok. Registration messages are received from the R(M)-communicators.

Solution

The problem is probably caused by some misconfiguration or corruption (due to power reset of the server?) in RabbitMQ. To solve it, RabbitMQ must be reset.

To solve it, you can use the ASA tool.

1. Go to the tools tab
2. Click the repair button to fix RabbitMQ
3. When it’s done, reboot the server

It might be that it’s still not working after running that repair script in the ASA tool. In that case, try following steps:

1. Open CMD in this directory C:\Program Files\RabbitMQ Server\rabbitmq_server-3.7.15\sbin
2. Run following command in CMD:
   • rabbitmqctl.bat stop_app
   • rabbitmqctl.bat reset
   • rabbitmqctl.bat start_app
3. Use the ASA tool and go to the tools tab
4. Click the repair button to fix RabbitMQ
5. When it’s done, reboot the server