Microsoft KB Archive/170977

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Knowledge Base

Article ID: 170977

Article Last Modified on 10/31/2006


  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Standard Edition

This article was previously published under Q170977


When you dial in to a computer running both Windows NT Server and Routing and Remote Access Service, you may encounter the following error message on your Windows NT RAS client:

Error 629: The port was disconnected by the remote machine.

From your Windows 95 Dial-Up Networking client, you may receive the following error:

Dial-Up Networking could not complete the connection to the server.
Check your configuration and try the connection again.


The Routing and Remote Access Service has not been configured to receive calls as a RAS server.


To enable your Routing and Remote Access server to receive RAS calls follow these steps:

  1. From the Control Panel, double-click Network.
  2. Click Services, click Routing and Remote Access, and click Properties.
  3. Click the port or ports that you want to enable to receive calls, click Configure, and select Receive calls as a RAS server.
  4. Click OK and restart the computer when prompted.


The Routing and Remote Access service is capable of being set to either answer calls as a normal RAS server or answer demand-dial router calls.

NOTE: This error message can also occur if you install Windows NT 4.0 Service pack 3 or 4 and then install RAS, but do not reapply the Service Pack update.

Additional query words: prodnt rras

Keywords: kberrmsg kbnetwork kbprb KB170977