PPTP VPN Troubleshooting Parent topic

If there are problems setting up the PPTP VPN, Administrators may receive the following errors.

Understanding PPTP VPN Error Messages

Error Message Explanation Recommended Action
VPN Error 800 - Unable to establish the VPN connection. PPTP packets from the VPN client cannot reach the Deep Edge server.
  1. - Ping the Deep Edge server, assuming pinging is allowed (that is, not blocked) between the PPTP client and the Deep Edge server. Confirm that Administrators have network connectivity between the PPTP client and the Deep Edge server.
  2. - To allow PPTP traffic, configure the network firewall to open TCP port 1723 and to forward IP protocol 47 for Generic Routing Encapsulation (GRE) traffic to the Deep Edge server. Some firewalls refer to IP protocol 47 as VPN or PPTP pass-through.
VPN Error 734 - The PPP link control protocol terminated. The protocol between the PPTP client and Deep Edge server is mismatched. For security considerations, Deep Edge server only supports MS-CHAP Version 2 and Point-to-Point Encryption. Make sure the PPTP client supports these two protocols.
VPN Error 691 - Access denied because username and/or password is invalid on the domain Username and/or password is invalid. Input the correct username and/or password or ask Administrators Administrator reset Administrators password.
VPN Error 649 - The account does not have permission to dial-in The account does not have permission to dial-in. In the RADIUS server configuration, add dial-in permission for the account.