Error 800: unable to establish a VPN connection

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Guest

Hi,

I am having problems connecting to the office network. I have a windows XP
Home Edition laptop with SP2. The VPN connection was working fine 3 days ago
and previously but not now. When I try to connect to the network I get the
message: "Error 800: Unable to establish VPN connection. The VPN server maybe
unreachable."

- I have tried recreating the VPN but to no avail.
- I am using a wireless network to connect to the internet and then using VPN.
- I have tried other wireless networks and then VPN too but to no avail.
- I have just tried the VPN connection on another 2 laptop's and desktop PC
and it works fine with the same wireless networks.
- Windows firewall is turned off.
- I am creating the VPN through Network connections > Connect to the network
at my workplace > etc etc................
- The VPN connection has already worked for this user on their laptop but
all of a sudden it has stopped working..
- User has Windows Defender and AVG anti-virus software on his
laptop..However so do all other laptops and PC's and it has not made a
difference there....

Any ideas? Any settings to check?
 
Do a simple test. Can you telnet port 1723?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Hi,

I am having problems connecting to the office network. I have a windows XP
Home Edition laptop with SP2. The VPN connection was working fine 3 days ago
and previously but not now. When I try to connect to the network I get the
message: "Error 800: Unable to establish VPN connection. The VPN server maybe
unreachable."

- I have tried recreating the VPN but to no avail.
- I am using a wireless network to connect to the internet and then using VPN.
- I have tried other wireless networks and then VPN too but to no avail.
- I have just tried the VPN connection on another 2 laptop's and desktop PC
and it works fine with the same wireless networks.
- Windows firewall is turned off.
- I am creating the VPN through Network connections > Connect to the network
at my workplace > etc etc................
- The VPN connection has already worked for this user on their laptop but
all of a sudden it has stopped working..
- User has Windows Defender and AVG anti-virus software on his
laptop..However so do all other laptops and PC's and it has not made a
difference there....

Any ideas? Any settings to check?
 
I tried this from command prompt and i got this message:

"Connecting to 217.206.181.40...could not open connection to the host, on
port 1723: Connect Failed"

What do i do? how do i open this port?

Thanks..
 
Assuming you have a router, I would check it first. These search result may help,

error 721 and error 800 Q: Error 721 and error 800. I have SBS 2003 Standard Edition. ... When attempting with an domain administrator account I still get those error:721,and 800 . ...
www.chicagotech.net/Q&A/vpn25.htm


case Studies - VPN error 721 and 800 Case 1: When a user attempts to access the Windows VPN server that is behind a Linksys WRT54G, he receives VPN Error 800 or 721. ...
www.chicagotech.net/VPN/vpncase800.htm


ras error code Error 797 Error 781 Error 783 Error 800 Error 806 - the VPN connection cannot be completed Error 913 ... Error 800: Unable to establish the VPN connection. ...
www.chicagotech.net/raserrors.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com

I tried this from command prompt and i got this message:

"Connecting to 217.206.181.40...could not open connection to the host, on
port 1723: Connect Failed"

What do i do? how do i open this port?

Thanks..
 
But the thing is.. my desktop PC at home connects to the VPN fine and I
have also managed to connect to the VPN on 2 other laptops.. In fact this is
the only laptop having problems which suggests to me that the VPN server is
fine...

Is there anything on the laptop that i can check? etc? Thanks
 
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