This is
Do you have a modem-related question?
Modemsite's free public modem board: Q&A - Helping you get the best performance from your modem
 Troubleshooting News Technical Search
 Home Forum 56 Premium Site Map
Home Troubleshooting  DUNS Errors  Error 720


720 - No PPP control protocols configured.

All Operating Systems - This error can occur if you have not configured your Dial-up Networking settings to use a protocol supported by the ISP or system you are calling. Check the Server Types tab of your Dial-up connectoid. Most ISP's use TCP/IP protocol, and no others should be checked. There is a screenshot of a Windows 95 connectoid's Server Tab here. Also check the Dial-up Server selection. For most ISP's this will be PPP, although some may support SLIP or CSLIP.

If you have selected TCP/IP as the protocol, and it is not supported by the system you are calling, you may get this error. (For example, a Remote Access Server set up for NetBEUI.) Solution: Configure the Server Types of the DUNS connectoid to match the protocol installed on the remote server.

If you are connecting to a server that requires 128-bit encryption and your system doesn't have 128-bit encryption installed, you may get this error. This Microsoft page will detect and recommend 128-bit encryption upgrade. Also see: MS KB Article: Installing RRAS disables 128-bit encryption.

The installation of TCP/IP and/or dial-up networking may be damaged. Check ControlPanel->Network for TCP/IP assigned to (or bound to) the Dial-up Adapter. You can Remove, then Re-install the TCP/IP protocol (except with newer versions of Windows - see next paragraph). If you have a LAN card in your machine and access the Internet via a modem, unless you use TCP/IP on your LAN, TCP/IP should be assigned (bound) to only the Dial-up Adapter.

With Windows XP, you cannot re-install TCP/IP, but you can reset it with the following DOS command:

Click Start, then Run..., and put the following in the Open text box (or enter the following from a DOS command prompt which you can get by Start->Run-> cmd)
netsh int ip reset resetlog.txt

Windows NT: If you have configured RAS to only receive calls, you may receive this error. Go to the Remote Access Service tab on Services from ControlPanel->Network, and configure RAS for dial-out only, or dial-out and receive calls. See this MS KB Article.

Windows NT & 2000: This MS KB Article indicates the error (as well as error 611) may have several different causes, including the NETBIOS interface not being installed, or NETBIOS binding disabled.

 Back to all DUNS errors

Home  |  Links  |  Send Feedback  |  Privacy Policy  | Report Broken Link
Legal Page  |  Author's Web Sites   |  Log In 1998-2022 v.Richard Gamberg. All rights reserved.