Error 721 Remote
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To New Topics Error 721: Remote PPP peer or computer is not responding. Resolution: If you have tried many thing https://support.microsoft.com/en-us/kb/888201 other people suggest like rebooting, reloading hardware and re-installing the VPN or dial in connection, you still get the same problem. I will suggest to check the router settings and make sure TCP Port http://www.howtonetworking.com/vpnissues/error721.htm 1723, IP Protocol 47 (GRE) are opened. Also make sure that the router has the PPTP enabled and not firewall block the traffic. On the RAS server, check the DHCP settings. Post your questions, comments, feedbacks and suggestions Related Topics VPN error code VPN Browsing Issues VPN Logon Issues VPN Name Resolution VPN as Router VPN Routing Issues VPN TCP/IP Settings Ports for VPN VPN/PPTP VPN Slow Issues Previous Page Next Page This web is provided "AS IS" with no warranties. Copyright © 2002-2015 ChicagoTech.net, All rights reserved. Unauthorized reproduction forbidden.
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://serverfault.com/questions/110009/vpn-returning-721-error-despite-successful-logins-to-from-other-locations Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and http://itknowledgeexchange.techtarget.com/itanswers/vpn-error-721-2/ answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted error 721 up and rise to the top VPN returning 721 error despite successful logins to/from other locations up vote 2 down vote favorite I am trying to connect a couple of Win XP desktops at a remote site, to the server (SBS 2008) of a central site, using a PPTP based VPN. When I try to connect, I get the error "Disconnected. Error 721: The remote computer did not error 721 remote respond." Here is the strange part: The remote PCs can successfully dial out to another server using VPN. Similarly, I can successfully dial into the central site from my work PC. The remote computers are dialling out through a Netgear DG834Gv4 (latest firmware), and the server is behind a Draytek 2820. I have also tried using the Draytek as the VPN endpoint (instead of it doing pass-through), which again worked successfully from my work PC, but gave the same result from the remote site. I can ping the central site from the remote one, no problem. I can also telnet into port 1723 from the remote site. The central server is a domain controller with AD. At some point in the past, the remote PCs were successfully logged onto the domain, so now log into that (but obviously can't connect). The remote PCs are on a network which contains another SBS 2008 domain/domain controller/AD/server. However, the remote PCs are using the DG834 as their DNS/DHCP/etc. I and my colleagues are totally stumped - we know each end is fine independently, but for some reason they won't work together. We don't think that it's authentication; it doesn't seem to get that far.
? Ask a question, help others, and get answers from the community Discussions Start a thread and discuss today's topics with top experts Blogs Read the latest tech blogs written by experienced community members Problem establishing VPN connection with remote server Stevesz 2015 pts. Tags: Thanks! We'll email youwhen relevant content isadded and updated. Following Follow error 721 Thanks! We'll email youwhen relevant content isadded and updated. Following Follow VPN issue Thanks! We'll email youwhen relevant content isadded and updated. Following Follow Windows XP SP3 One machine is having a problem establishing a VPN connection with a remote server. It hangs on verifying the username and password. Another machine on the same network, using the credentials of the user who has the problem connects straight away. This has led me to believe that the problem is entirely with the one machine. I've updated the NIC driver with no success. I have created a new VPN connection but get the same results. I have even shut down the firewall on the local machine without gaining anything. This connection was working in the past. I have not been able to put a finger on the problem and I am looking at doing a complete re-install of the OS right now. The error returned is "721: The remote computer did not respond." I did check ADUC and the user is allowed to connect remotely. Does anyone have any suggestions?Software/Hardware used: Windows XP SP3, Microsoft VPN Client Asked: February 25, 20119:40 PM Last updated: June 27, 20134:57 PM Related Questions Cisco VPN Client error message Cisco VPN Concentrator 3000 Issue VPN Problems with SBS 2003 Cisco pix vpn access How can i connect my windows XP machine to a remote office? Answer Wiki Last updated: June 27, 20134:57 PM GMT Michael Tidmarsh48,715 pts. History Contributors Ordered by most recent Michael Tidmarsh48,715 pts. Mariodlg2,790 pts. Thanks. We'll let you know when a new response is added. I had similar troubles when I installed a program to manage voip comunication inside the company. This software had installed another network interface and that was the problem. Once uninstalled I have been able to connect to the vpn network again. Another software who creates network interfaces are virtual machines managers like VirtualBox or VMWare. Search for a recent change in any of the interfaces of the machine with troubles. I had similar troubles when I installed a program to manage voip comunication inside the company. This software had installed another network interface and that was the problem. Once uninstalled I have been able to co