Occasional Contributor

hi my name is Eric, i am a first year system administration student in the NL
i have run into a problem with the login of admin center on my hobby server (basically an old desktop from 2009, surprisingly running windows server 2019) but i'm having trouble getting WinRM to cooperate, i'm not sure if this is the right place to even ask, if not my apologies. i attached a file with the error i'm getting when trying to log onto the server, am i doing something wrong? did i skip a step? i'm not entirely sure

Note: this is a clean install of windows server 2019
Note 2: kerberos is not enabled 

Edit: i have done some more digging my server certificate is according to Chrome unsafe.

there is a DDNS name registered for my PC by use of no ip (this is for my minecraft server, doesn't use port 443) could this have something to do with it?

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