Suddenly I have clients getting an error connecting to our PPTP VPN - error 691. Windows Server 2003. If I try to connect on the local network - no error. If their off site - error 691. Disabled security software and tried new user account - also verify user name and domain are correct - no success. Also verified PPTP port on SonicWall router is forwarded to correct IP - no luck. Please help.

Hi Matthew, Error 691: Access denied because username and/or password is invalid on the domain. Make sure the Include Windows logon domain check box is unchecked in the Options tab of the dial-up connection's Properties dialog box. Similar Discussion - Try suggestions from Leo http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/5793e058-f98a-4278-93a5-22b9ef86fccf/ Regards, Rafic If you found this post helpful, please give it a "Helpful" vote. If it answered your question, remember to mark it as an "Answer". This posting is provided "AS IS" with no warranties and confers no rights! Always test ANY suggestion in a test environment before implementing!

Hi Matthew, Error 691: Access denied because username and/or password is invalid on the domain. Make sure the Include Windows logon domain check box is unchecked in the Options tab of the dial-up connection's Properties dialog box. Similar Discussion - Try suggestions from Leo http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/5793e058-f98a-4278-93a5-22b9ef86fccf/ Regards, Rafic If you found this post helpful, please give it a "Helpful" vote. If it answered your question, remember to mark it as an "Answer". This posting is provided "AS IS" with no warranties and confers no rights! Always test ANY suggestion in a test environment before implementing!

You can also use PortQry port scanner utility to troubleshoot. I suggest you to ask here. http://social.technet.microsoft.com/Forums/en/w7itpronetworking/threads Thanks

It ended up being a port problem with the router on my end.

It ended up being a port problem with the router on my end.