This policy setting allows you to set the encryption types that Kerberos is allowed to use. This policy is supported on at least Windows 7 or Windows Server 2008 R2. This policy setting allows you to set the encryption types that Kerberos is allowed to use. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options!Network Security: Configure encryption types allowed for Kerberos (2) REG: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters!SupportedEncryptionTypes