I can't deactivate wired ens33 on nmtui ![enter image description here]( I tried to Deactivate the cable ens33 in nmtui, and I get an error message NetworkManager TUI "Could not activate connection: Connection 'ens33' is not available on device ens33 because device is strictly unmanaged" I've been looking for a solution to all forums on Google, but I can't solve this problem Os: centos7

You can't change the status of network interface because is set to `unmanaged` (`managed=false`). Use `nmcli -p device` to check it.

Edit the global configuration file `/etc/NetworkManager/NetworkManager.conf` as follows:


[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true


Then:


sudo systemctl restart NetworkManager


Check it through `nmcli`:


nmcli -p device


The you will be able to activate/desactivate the network.