During the installation of a hub there is a popup error window titled 'Initial Security' with the text 'Did not succeed setting security.'.
The error happens when there is a problem with the new hub communicating back to the primary hub which is needed to sync the security.cfg.
The hub has been installed successfully.
Continue by setting up communication between the new hub and a hub that is able to communicate with the primary hub. The recommended method is to use a tunnel.
This is a copy of my knowledge document:
TEC1271909 UIM - hub install error 'Did not succeed setting security'