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Q152605: RAS Error 720 When Dialing Out

Article: Q152605
Product(s): Microsoft Windows NT
Version(s): ; winnt:3.5,3.51,4.0
Operating System(s): 
Keyword(s): kbnetwork
Last Modified: 09-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Server version 3.1 
- Microsoft Windows NT Workstation version 3.1 
- Microsoft Windows NT Advanced Server 
- Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0 
- Microsoft Windows NT Server versions 3.5, 3.51, 4.0 
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SYMPTOMS
========

When you try to dial out using Remote Access Service (RAS) or Dial-Up Networking
(DUN), the following error message may appear:

  Cannot connect the phonebook entry. Error 720: No PPP control protocols
  configured.

You may also receive one of the following errors when you try to add a protocol
to a phonebook entry:

  The <Protocol Name> protocol cannot be selected because it is not
  installed or is disabled for Remote Access. To change this, start the Control
  Panel Network applet, choose Configure Remote Access, and press the Network
  button.

  -or-

  The <Protocol Name> protocol cannot be selected because it is not
  installed or is disabled for Remote Access. To change, in Control Panel start
  Network, choose Services page, Remote Access Properties, and press the
  Network button.

CAUSE
=====

This problem can occur if RAS is configured to receive calls only. To use RAS or
DUN to dial out, RAS must be configured to either dial out only or dial out and
receive calls.

RESOLUTION
==========

To resolve this problem, use the appropriate method below:

Windows NT versions 3.1, 3.5, and 3.51
--------------------------------------

1. Double-click the Control Panel icon in the Main group, and then double-click
  the Network icon.

2. Under Installed Network Software, click Remote Access Service, click
  Configure, and then click Configure again.

3. Under Port Usage, click either Dial Out Only or Dial Out And Receive Calls.

4. Click OK, click Continue, click OK, and then click Restart Now to restart
  your computer when you are prompted.

Windows NT version 4.0
----------------------

1. Click Start, point to Settings, click Control Panel, and then double-click
  Network.

2. On the Services tab, click Remote Access Service, and then click Properties.

3. Click Configure, and then click either Dial Out Only or Dial Out And Receive
  Calls.

4. Click OK, click Continue, click Close, and then click Yes to restart your
  computer when you are prompted.

MORE INFORMATION
================

For more information on RAS Error 720, please see the following articles in the
Microsoft Knowledge base:

Q123298 RAS Errors 611 and 720 With PPP or SLIP

Q122748 Err Msg: Error 720: No PPP Control Protocols Configured

Additional query words: prodnt 3.10 netbeui tcp/ip ipx

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Keywords          : kbnetwork 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTW310 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTS310 kbWinNTAdvSerSearch kbWinNTS351search kbWinNTS350search kbWinNTS310search kbWinNT310Search kbWinNTW310Search
Version           : :; winnt:3.5,3.51,4.0

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