Microsoft KB Archive/108737

= Err Msg: Cannot Allocate a ROUTE for User Connected on COM... =

Article ID: 108737

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Advanced Server 3.1

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This article was previously published under Q108737



SYMPTOMS
When a Remote Access client calls a Windows NT Remote Access Server (RAS), the following error message appears:

The remote access server cannot allocate a ROUTE for user connected on COM port [port #].



CAUSE
This error message appears in the error log if the Windows NT (or Windows NT Advanced Server) Remote Access Server is configured with TCP/IP but NBF has not been installed to prevent NetBEUI frames from getting onto the local area network (LAN). However, Remote Access Service for Windows NT requires that the NBF (NetBEUI) protocol is installed.



RESOLUTION
If you do not want to put any NBF NetBEUI frames on the remote LAN at all and only allow TCP/IP frames to get onto the wire, but still use NBF for RAS, then you can unbind NBF from the network card. This allows RAS users to still call in through RAS because the dataflow direction here is from the RAS NDIS driver to NBF. Unbinding RAS from the network card only prevents the flow of data from NBF down to the NDIS driver for the network card.

To unbind the Remote Access Service from the network card on the Remote Access Server, do the following:

 In the Control Panel window, choose the Network icon. Select Bindings. In the Show Bindings For field, select Remote Access Server Service.

NOTE: In the listbox below the all lines involving the "Remote Access Server Service" will appear. Select the line:

Remote Access Server Service -> Netbeui -> [Name of adapter] Adapter Driver -> [Name of adapter] Adapter

 Choose the Disable button at the bottom of the dialog box and choose the OK button. In the Network Settings dialog box, choose OK.</li> In the "You must shutdown and restart your computer so that the change you made will take effect" dialog box, choose the Now box or the Later box.</li></ol>

For more information on hiding protocols and disabling bindings, see the Windows NT 3.1 Remote Access RASREAD.TXT file in the SYSTEM32\RAS directory and the Microsoft Windows NT Advanced Server "System Guide."

Additional query words: prodnt

Keywords: kbnetwork KB108737

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