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VPN Error Code 720
Error registering your
computer
A connection to the remote
computer could not be established
I have a XP pro laptop that connects to a windows 2003
server running rras. I cannot connect to the server with this laptop. I
get the error:
Registering your computer on the network...
Error 720: A connection to the remote computer could not be
established. You might need to change the network settings for this
connection.
I have searched for days for an answer and have only found two instances of
this problem and both people gave up and reformatted - not an option here.
The connection works fine on any other desktop or laptop which leads me to
believe the settings on the server (username, password, etc.) are correct.
The laptop will not connect when connected via the wireless LAN to the
internet or the wired network card.
I have reset ip (since I cannot uninstall in XP pro). I have recreated the
id on the server. I have updated all service packs from Microsoft. I have
updated the driver to the Intel network cards in the laptop. I have run xp
tcp/ip repair utility. I have looked in the event log of both the server
and the laptop - nothing appears. I am running tcpip and client for
Microsoft networks and have made sure they are checked in the connection
properties.
This seems to be a rare case and I am not sure the error is the actual error
that is causing the problem.
A: VPN error 720 is
protocol issue. I would double-check protocol configuration in both sites.
These search result may help,
Error 720 - No PPP Control Protocols Configured. Symptom: When attempting to
establish a VPN connection to Windows RRAS, you may receive the following
error ...
http://www.chicagotech.net/VPN/error720.htm - Similar pages
ras error code
Error 682 Error 691 Error 711 Error 720 Error 721 VPN Error 732: The PPP
negotiation is not ... Error 720: No PPP control protocols configured.
Resolution: ...
http://www.chicagotech.net/raserrors.htm
Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
Q2: I finally worked this out:
Follow these instructions in step One: (Don't worry about uninstalling TCPIP.)
http://support.microsoft.com/default.aspx?scid=kb;en-us;810979.
I removed WAN Miniport (IP) and WAN Miniport (pptp)
No need to test in the last step - still did not work.
Follow these instructions in step two:
Find netrasa in c:\windows\inf
Open and place a semicolon in front of the line that starts "Excludefromselect=\"
and end with "MS_NdisWanNbfIn,MS_NdisWanNbfOut" under the [ControlFlags]
section. (all lines between)
Follow these steps for step Three:
Start a Add new hardware session and choose that the hardware is
already installed. Choose to "Add New Hardware" and then select "Network
Adapters" followed by "Microsoft" and then both the PPTP and the IP Wan
miniport one at a time. (NO need to reboot between these steps)
After you finish both then reboot.
Run the xp tcpip repair utility from your favorite download site and choose
to "Reset TCP/IP"
Reboot and try your VPN connection.
Hope this saves someone time in the future.
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