Enable RPC Endpoint Mapper Client Authentication

Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista, WindowsXP

This policy setting controls whether RPC clients authenticate with the Endpoint Mapper Service when the call they are making contains authentication information. The Endpoint Mapper Service on computers running Windows NT4 (all service packs) cannot process authentication information supplied in this manner. If you disable this policy setting, RPC clients will not authenticate to the Endpoint Mapper Service, but they will be able to communicate with the Endpoint Mapper Service on Windows NT4 Server. If you enable this policy setting, RPC clients will authenticate to the Endpoint Mapper Service for calls that contain authentication information. Clients making such calls will not be able to communicate with the Windows NT4 Server Endpoint Mapper Service. If you do not configure this policy setting, it remains disabled. RPC clients will not authenticate to the Endpoint Mapper Service, but they will be able to communicate with the Windows NT4 Server Endpoint Mapper Service. Note: This policy will not be applied until the system is rebooted.

This policy has no additional user input fields.

• Computer
  Ignore Delegation Failure

  At least Windows Server 2003
• Computer
  Maintain RPC Troubleshooting State Information

  At least Windows Server 2003 operating systems or Windows XP Professional
• Computer
  Propagate extended error information

  At least Windows Server 2003 operating systems or Windows XP Professional
• Computer
  Restrict Unauthenticated RPC clients

  At least Windows XP Professional with SP2
• Computer
  Set Minimum Idle Connection Timeout for RPC/HTTP connections

  At least Windows Server 2003 operating systems or Windows XP Professional with SP1