something keeps getting renamed after win10 reboot, I block it, reboot and it comes up as a different jibberish name.lan. connecting to my win10 machine.
What could this possibly be?
I blocked fdyqtixvjlp.lan reboot then bnwnkocvctuim.lan appeared then blocked it, if I reboot it’ll be another jibberish name.lan.
No, at least not judging by those random domain requests.
That is a random domain that is requested, not some random client.
Your screenshot suggests that those requests are sent by a client named itsalive.lan.
If you'd wanted to investigate further, you'd have to identify which software on that client would issue those random requests, e.g. if that's your Win10 machine:
While I am viewing the logs on the admin page with my smart phone, as soon as the lock screen after reboot, the signal is sent. It’s not after I logon, it at the lock screen. Nothing starts except services?