You have two servers named Server1 and Server2 that run Windows Server 2012 R2.Server1 and Server2 are
part of a workgroup.
On Server1, you add Server2 to Server Manager.
When you attempt to connect to Server2 from Server Manager, you receive the following error message:
“Credentials not valid.”
You need to ensure that you can manage Server2 from Server1 by using Server Manager on Server1.
What should you do?
A.
On Server1, run the Set-Item cmdlet.
B.
On Server 1, run the Set-NetFirewallRulecmdlet.
C.
On Server 2, install the Remote Server Administration Tools (RSAT).
D.
On Server2, run the Configure-SmRemotingcmdlet.
What item we need to set?
for your reference coming from older version and the explanation was there 🙂
http://www.aiotestking.com/microsoft/you-need-to-ensure-that-you-can-manage-server2-from-server1-by-using-server-manager-on-server1/
1. On Server1, add the workgroup server name to the TrustedHosts list; add the Concatenate parameter to the command. For example, to add the Server2 to an existing list of trusted hosts, use the following command:
Set-Item wsman:\localhost\Client\TrustedHosts Server2 -Concatenate -Force
Extra:
2. Make sure Server2 will have the Private network profile.
3. To override UAC restrictions on running elevated processes on Server2 run:
New-ItemProperty -Name LocalAccountTokenFilterPolicy -path HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System -propertyType DWord -value 1
4. From here you know: go to All Servers, Manage as…
On the computer that is running Server Manager, add the workgroup server name to the TrustedHosts list. This is a requirement of NTLM authentication. To add a computer name to an existing list of trusted hosts, add the Concatenate parameter to the command. For example, to add the Server01 computer to an existing list of trusted hosts, use the following command.
Set-Item wsman:\localhost\Client\TrustedHosts Server01 -Concatenate -Force