Windows NT
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RAS Errors 611 and 720 With PPP or SLIP

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, one of the following error messages appears:

Using SLIP

Error 611: Route is not available

Using PPP

Error 720: No PPP control protocols configured.


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


To correct this problem, select the Network option from Control Panel and do the following:

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