DUNS 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.
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