I had a few that got halfway through registering and crapped out because I had some permissions issues. The spinning dials for the incoming hosts don't dissapear though

we can manually delete the hosts we don't want

So there isn't even a way to manually remove them that I can see.

Have you tried to restart fleet? it solved the problem for me

Yeah, no dice there either

can you force restart the osqueryd process on the hanging hosts?

so it was the same host but before I realized that not specifying a root_path results in different identifiers for each host. osqueryd can use hostnames instead of uuid for an identifier but I don't think that is the case with launcher unless im mistaken