An "Error 611" or "Error 720" error message occurs when you try to dial out from a Windows NT Remote Access Service (RAS) client and an event log error occurs when the Remote Access Service (RAS) server service fails to start (123298)


The information in this article applies to:

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Professional
  • Microsoft Windows NT Workstation 3.5
  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Workstation 4.0
  • Microsoft Windows NT Server 3.5
  • Microsoft Windows NT Server 3.51
  • Microsoft Windows NT Server 4.0
This article was previously published under Q123298
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

SYMPTOMS

When you attempt to dial out from a Windows NT Remote Access Service (RAS) client using the Remote Access protocol Serial Line Internet Protocol (SLIP) or Point to Point Protocol (PPP) to a TCP/IP server, you receive one of the following error messages:

Using SLIP

Error 611: Route is not available

Using PPP

Error 720: No PPP control protocols configured.
Additionally, when you start the Windows NT-based computer, the Remote Access Service does not start. You may receive the following error in the event log:
   Event ID: 20055
   Source: RemoteAccess
   Description: The Remote Access Service server could not be started
                because it has been configured to access the network and
                there are no network adapters available.

CAUSE

This problem may have several different causes. Two known causes are the NetBIOS interface not being installed or removed and the NetBIOS binding being disabled. The NetBIOS interface is required for establishing logical names and sessions on the network for Windows NT.

RESOLUTION

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To correct this problem, select the Network option from Control Panel and do the following:
  1. Verify that the NetBIOS interface is installed.

    If necessary, use the following steps to install the NetBIOS interface:
    1. Click Start, point to Settings, click Control Panel, and then double-click the Network icon.
    2. Click Add Software.
    3. Click NetBIOS Interface in the Network Software list, and then click Continue.
    4. Type the location of your Windows NT files, and then click Continue.
    5. Click Close, and then restart the computer when you are prompted.
  2. Verify that the bindings of the NetBIOS interface are enabled and properly established with the NDISWAN drivers. To do so:
    1. Start Registry Editor, and locate the following key:

      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}\00xx

      00xx is the subkey that is defined in "DriverDesc" as "WAN Miniport(IP)".
    2. Click the LinKage subkey.
    3. In the detail pane, you should have a "RootDevice" of "NdisWanIp". In addition, there will be an "UpperBind" key, which needs to have a value of Tcpip.

MORE INFORMATION

For more information about RAS Error 720, click the following article numbers to view the articles in the Microsoft Knowledge Base:

152605 RAS Error 720 when dialing out

122748 Err Msg: Error 720: No PPP control protocols configured

Modification Type:MajorLast Reviewed:7/15/2005
Keywords:kberrmsg kbtshoot kbnetwork KB123298 kbAudITPRO
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