Windows Server 2025 Windows Remote Management (WinRM) service must not allow unencrypted traffic.

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.

Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Service\

Value Name: AllowUnencryptedTraffic

Type: REG_DWORD Value: 0x00000000 (0)

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> Allow unencrypted traffic to "Disabled".