Since you are reading this post you are probably “pissed off” and tired of deleting an object in All systems collection that is named Unknown…. You probably figured out that whenever a deployment fails, for some strange reason you have to find and delete these unknown objects in All Devices Collection. Well, I got tired too and decided to figure out a solution.
So the solution (until Microsoft fix this) is to add another query rule to the “all unknown computers” collection that adds the machines that are unknown. This is how I did it (just screenshoots):
So there you have it. A solution for dealing with Unknown Computer objects. I don’t know if this is a bug or way of solving something else. This could be a design decision from Microsoft. I have not found any documentation on this yet. If you got any other/better solutions, please feel free to comment or send me a message on twitter ( @oddvarmoe )