Hi everyone!
I am working with Windows Server 2019 installed in CORE mode with Hyper-V service enabled (host) and I need to manage the server from another Windows Server 2019 GUI VM as well, running on top of it (guest). However, I am getting the following error message:

Firewall turned off on all, remote management enabled on host and trusted hosts added to guest. Is there any exact step by step to share? Ah, the same administrator credentials too.
C:\Windows\System32\drivers\etc>cmdkey /list
Currently stored credentials:
Target: Domain:target=eac_srv_host02
Type: Domain Password
User: administrator
Target: Domain:target=eac_srv_host01
Type: Domain Password
User: administrator
PS C:\Users\Administrator> Get-Item WSMan:\localhost\Client\TrustedHosts
WSManConfig: Microsoft.WSMan.Management\WSMan::localhost\Client
Type Name SourceOfValue Value
System.String TrustedHosts eac_srv_host01, eac_srv_host02
C:\Windows\System32\drivers\etc>type hosts
Copyright (c) 1993-2009 Microsoft Corp.
This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
This file contains the mappings of IP addresses to host names. Each
entry should be kept on an individual line. The IP address should
be placed in the first column followed by the corresponding host name.
The IP address and the host name should be separated by at least one
space.
Additionally, comments (such as these) may be inserted on individual
lines or following the machine name denoted by a '#' symbol.
For example:
102.54.94.97 rhino.acme.com # source server
38.25.63.10 x.acme.com # x client host
localhost name resolution is handled within DNS itself.
127.0.0.1 localhost
::1 localhost
10.168.251.21 eac_srv_host01
10.168.251.50 eac_srv_host02
Hope I was clear enough.
Thanks.