Maik Ro Hi, it worked even without using the QEMU image format for the disk; could it be that maybe in that case it would have performed better? Now I have to understand why if in the agent (I tried the one for a Debian ct) during the installation phase, despite telling it which group to add and what name to give it, it seems that the command (WAZUH_AGENT_GROUP='SERVER' where server is the name of the group WAZUH_AGENT_NAME='AdGuard-debian' where in this case the name is AdGuard-debian) is ignored since it puts the agent in the default group (I created a couple of them, one for the servers and one for any client in lan), ditto for the name that takes for its own sake that of the hostname. Therefore it is up to (as far as the group is concerned) to issue the appropriate shell command on the "server" side of wazuh for each agent to be moved to the group and then the same to remove this agent from the default group.