PPTP VPN Error 800


  1. if you have firewall, open TCP Port 1723, IP Protocol 47 (GRE).
  2. make sure you can reach the VPN server by using ping. Sometimes, poor connection can cause this issue too.
  3. You may need to updated firmware on a router or firewall if other OS (win9x/nt/me/w2k) works except XP.
  4. 4) The VPN server may not be able to get IP from DHCP for the VPN client.
  5. Make sure no other secure software blocks your access, for example, if you use Norton secure software, you may need to add the remote client's IP so that the client can access.
  6. If you can establish the VPN from the desktop at home but not from the laptop. Make sure no security software like Microsoft OneCare software that blocks the GRE.

Was this answer helpful?

 Print this Article

Also Read

I received error 721, which says the remote computer is not responding.

Cause: This issue can occur if the network firewall does not permit GRE traffic (IP protocol...

What is VPN pass-through ?

First, if you haven't already, disable any pc firewall while troubleshooting the VPN connection....

Error 691, Access denied because username and/or password is invalid

Verify the logon ID and password are correct. Make sure the VPN connection's security option...

Change/Fix MTU on Windows XP

Windows XP use a fixed maximum transmission unit (MTU) size of 1500 bytes for all PPP...

PPTP VPN Error 619, can not connect

This is a pptp client error that basically means it could not establish communication with the...