Error 781

Error 781 - Encryption Failed

 

Symptom: When connecting to a VPN server, you may receive this Error 781: The encryption attempt failed because no valid certificate was found.

 

Resolution: 1. If your VPN client is trying to use L2TP/IPSec for the VPN connection, you may receive above message. What you need to do is switching to a PPTP VPN connection, which doesn't need a certificate.  To do this, open the properties of the VPN connection, choose the Networking tab, and change the "Type of VPN" to PPTP VPN (default is Automatic). Also make sure you have good connection. Sometimes, poor connection can cause this issue too.

 

2. Install a valid machine certificate on the VPN server.

 

3. Stop and start the IPSec Policy Agent and RRAS  on the remote computer.

  • Email, SSL
  • 1 Utilizadores acharam útil
Esta resposta foi útil?

Related Articles

Error 792

Error 792 -   The L2TP Connection Attempt failed because security negotiation timed out....

Error 711

Error 711:  When attempting to start the Routing and Remote Access Service, you may receive...

Error 633

Error 633 Modem Is Already in Use Symptoms: When you try to use your modem on a Windows...

Error 682

Error 682:  When VPN clients try to remotely log on to your network, they may be denied access....

Error 937

Error 937: Because another connection of your type is in use.   Cause: W2K/XP limits one VPN...

Powered by WHMCompleteSolution