KSC 13 - Devices added from unknown source

[shadow]

Hello everyone,

I’m deploying some endpoint on different sites. I first used Active Directory and Domains scan to get every corporate computers into KSC but I saw that there were a lot of old computers which aren’t  used anymore.
I cleaned up my active directory, deleted the list in KSC and disabled the domain and AD lookup (in every menu I found) because now I only want network lookup.

The problem is : even when I delete the list of “unassigned devices” in KSC, every computer just appear again after (nearly) an hour. I don’t have any information on this object , neither IP address or the source of it’s creation, only have their hostname. They must come from a directory lookup but like I said, I disabled it.

The most strange part is that even the old computers that i deleted during my directory clean up appear again in KSC. I don’t understand how it is possible, they don’t exist anymore. I’m a bit lost.

What can be the possible causes of this behavior ?

 

Hope my post is understandable.

Thank you !