I recently struggled with an access denied message trying to remotely manage tasks using the local administrator account of the remote machine. I had the firewall turned off and tried the various other steps I found in documentation. What I eventually found was that one particular piece of UAC policy was blocking my attempts. This setting had to be set to "1" in order connect remotely and I don't think its exposed by the base group policies:
I recently struggled with an access denied message trying to remotely manage tasks using the local administrator account of the remote machine. I had the firewall turned off and tried the various other steps I found in documentation. What I eventually found was that one particular piece of UAC policy was blocking my attempts. This setting had to be set to "1" in order connect remotely and I don't think its exposed by the base group policies:
LocalAccountTokenFilterPolicy https://learn.microsoft.com/en-us/troubleshoot/windows-server/windows-security/user-account-control-and-remote-restriction#how-to-disable-uac-remote-restrictions