Help Fix Error 721 Vpn Windows Xp Sp3

August 22, 2021 By Gary Lamb Off

 

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    Sometimes your system may display an error code that displays error 721 vpn windows xp sp3. This error can have several causes. VPN issue 721 can occur when the network policy does not allow GRE traffic. The general route encapsulation technique is used in conjunction with point-to-point tunneling protocol to create virtual private sites between a server and a customer or between clients.

     

     

    • Question

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    I have your own Windows XP Pro SP3 machine. As of today, he cannot connect to the specific VPN server he has always talked to. Username and details are ok. I can log in to another accountA computer with the same username on the same server. Nothing on the server side needs to be changed. No update was performed on the client side. It connects to the server, not to mention the errors in verifying the user’s nickname and password. A reset (power off and on) has been done so you can restore your modem, router and computer, taking into account the lack of success. Also, no internal eventvwr errors are thrown during any of our crash processes. The firewall is also disabled on the computer system router and system. VPN pass-through is enabled on the Linksys router. For troubleshooting purposes only, I have enabled the DMZ for the IP address of the idea computer. therefore all ports are open. Do you have any other idea of ​​what is going on?

    The Answers

    • error 721 vpn windows xp sp3

      The problem is claimed to be resolved … I know I checked the Windows Firewall. However, he was almost certain thatit’s included when i decided to check it again.

      • Marked as a response by user Hydrazoic August 14, 2013 18:22

    • Question

    • I have a Windows XP Pro SP3 computer. Only recently has he been unable to connect to the VPN server he recently connected to. The username and password must be correct. I can connect to the same server from another PC with the same username. Nothing on the server side has changed. No updates were made on the client side either. It connects to the server and makes it difficult to verify the username and password. Reset (disabled but enabled) has always been popular on device, router and computer. Even during the action of the failure, there is no unsuccessfully chosendevelopments. The firewall is also on and on on the switch on the computer. VPN pass-through is enabled up to the Linksys router. To solve this problem, I enabled the DMZ using the IP address of this computer. For this reason, all ports are open. Do you have a second idea of ​​what is going on?

    Specifically, I have a Windows XP Pro SP3 computer. To this day, in particular, he is unable to establish a connection and the VPN server to which he was almost always connected. You can also use a username and password. I can connect to the same server using a different computer with the same customer name. Nothing on the server side has been changed. There were also no updates on client aspects. It connects to the whole server and cannot verify the username and password. Reset (power off and on) was successful on modem, router and computer without success no. Even during the error process there is no error eventvwr. The firewall is disabled on the computer’s router. An end-to-end VPN is often used on a Linksys router. I left DMZ for IP to start this skill computer just for troubleshooting purposes therefore all ports are read. Do you have any other ideas about what is safe?

    The Answers

    • This was recently fixed … I know I checked a specific Windows firewall. However, it was safe enough to activate when I decided to allow them to be re-checked.

      • Marked As Answer Hydrazoic August 14, 2013 18:22

    This was recently resolved … I know I tested Windows Firewall. However, when I made the decision to double-check, this, unconditionallyoh, it was enough.

    • Marked as a response by user Hydrazoic August 14, 2013 18:22

     

     

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