The error message "failed to reconnect to the RTDE" appears, if there is no connection between MIRAI controller and robot during tool-configuration.
- make sure the robot is connected correctly
- check if the robot-ip is set according to default network connection
- if the tool configuration cannot be completed, after fixing the network, please restart the system
With the latest Software-Version this error will occur for information purposes only and a system restart won't be needed.