Troubleshooting:Please make sure that ppptool.exe is present in the client installation directory (this is generally C:Program FilesCisco SystemsVPN Client. Reason 415:A required component PPPTool.exe is not present among the installed client software. Please try IPSec over UDP or straight IPSec. Troubleshooting:The VPN Client was not able to establish the TCP connection for IPSec over TCP connection mode. Troubleshooting:Either the user entered wrong user authentication information, or the client was not able to launch the XAuth (user authentication) process. To do that, go to the Start > All Programs > Cisco Systems VPN Client > Set MTU. Setting your MTU to 1300 or lower will prevent packets from being fragmented and therefore increase performance.
#Mtu for vpn connections software
Try disabling any firewall software on your PC.ĥ. Please make sure the group name is exactly as the same as the VPN server group name.Ĥ. If you have your firewall turned on, there might be a rule that is preventing the connection from being established properly. Make sure you can ping the remote peer, or check remote peer logs for why it is not responding to the client.Ģ. In many cases, this is due to loss of connectivity. Reason 412: The remote peer is no longer responding.ġ. Troubleshooting:The remote peer is either not a Cisco device or it does not support the VPN Client protocol specification. Reason 411: The remote peer does not support the required VPN Client protocol. Troubleshooting: This is not currently used. Reason 410: The Connection Manager was unable to forward the user authentication request. Troubleshooting: A VPN connection already exists. Reason 409: A VPN connection already exists. Troubleshooting: A connection is already in process. Reason 408: A VPN connection is already in the process of being established. Troubleshooting: A user hit the cancel button (instead of OK) in the VPN Client user authentication dialog. Reason 407: User authentication was cancelled by the user.
Reason 406: Unable to establish a secure communication channel. Troubleshooting: This reason is not currently used. Reason 405: The remote peer terminated connection during user authentication. connection during negotiation of security policies. Troubleshooting: Check the remote peer (head−end) logs to determine the cause for this failure. Reason 404: The remote peer terminated the connection during negotiation of security policies.
One of the reasons that users can get this message is because IKE negotiations failed. Troubleshooting: This can happen because of multiple reasons. Reason 403: Unable to contact the security gateway. This file can be copied from a machine that has the correct entry of this file. To fix this problem, replace the connection profile file from the profiles directory. On most machines, this is "C:Program FilesCisco SystemsVPN Clientprofiles". Connection profiles are located in profiles. To fix this problem, you can either select another connection profile, or fix the current connection entry. Troubleshooting:Either the connection profile is missing or does not have all the information. Reason 402: The Connection Manager was unable to read the connection entry, or the connection entry has missing or incorrect information. Troubleshooting: VPN connection was not established because of an unrecognized reason. Reason 401: An unrecognized error occurred while establishing the VPN connection.