Dial Up Error 721 Windows Xp
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Windows games Windows phone games Entertainment All Entertainment error 777 failure operating system Movies & TV Music Business & Education Business Students & educators error 777 laptop windows 7 Developers Sale Sale Find a store Gift cards Products Software & services Windows Office Free downloads & security Internet https://support.microsoft.com/en-us/kb/888201 Explorer Microsoft Edge Skype OneNote OneDrive Microsoft Health MSN Bing Microsoft Groove Microsoft Movies & TV Devices & Xbox All Microsoft devices Microsoft Surface All Windows PCs & tablets PC accessories Xbox & games Microsoft Lumia All https://support.microsoft.com/en-us/kb/824864 Windows phones Microsoft HoloLens For business Cloud Platform Microsoft Azure Microsoft Dynamics Windows for business Office for business Skype for business Surface for business Enterprise solutions Small business solutions Find a solutions provider Volume Licensing For developers & IT pros Develop Windows apps Microsoft Azure MSDN TechNet Visual Studio For students & educators Office for students OneNote in classroom Shop PCs & tablets perfect for students Microsoft in Education Support Sign in Cart Cart Javascript is disabled Please enable javascript and refresh the page Cookies are disabled Please enable cookies and refresh the page CV: {{ getCv() }} English (United States) Terms of use Privacy & cookies Trademarks © 2016 Microsoft
Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks. Windows 7 Help Forums Windows 7 help and support Network & Sharing » User Name Remember Me? Password Advanced Search Show Threads Show Posts Advanced Search Go to Page... Windows 7: VPN Gurus: error 721 23 Jun 2010 #1 BigJohnny Win7 8 posts VPN Gurus: error 721 hi, i wanted to implement a vpn connection using microsoft technology. i enabled ras on the host computer which has win 7. the host computer sits behind a di-524 router, so i've enabled pptp pass through and ipsec pass through, moreover, i set a port forwarding for 1723 and 500 (both tcp and udp) to the host computer. from the guest computer, who sits in a different subnet and uses win xp, i used telnet to verify that the host server can be reached, there was no problem reaching it. then i verified the generic routing encapsulation (gre) is set too, so i've used pptpclnt and pptpserv, and gre check complete successfully. still, when i set a vpn dialup connection, i get error 721 (after verifying username and password). any vpn guru can help me here? thanks. My System Specs OS Win7 BigJohnny View Public Profile Find More Posts by BigJohnny . 23 Jun 2010 #2 chev65 Windows 7 Ult, Windows 8.1 Pro, 9,149 posts San Diego I received error 721, which says the remote computer is not responding. Cause: This issue can occur if the network firewall does not permit GRE traffic (IP protocol 47). PPTP uses GRE for tunneled data. Solution: Configure the network firewall between the VPN client and the server to permit GRE. In addition, make sure that the network firewall permits TCP traffic on port 1723. Both of these conditions must be met to establish VPN connectivity by using PPTP. For more information, see article 888201, "You receive an "Error 721" error message when you try to establish a VPN connection through your Windows Server-based remote access server" in the Microsoft Knowledge Base. Troubleshooting remote access VPNs: Virtual Private Network (VPN) This is what comes up for error 721. Hope it helps. My System Specs Computer type PC/Desktop System Manufacturer/Model Number Home built OS Windows 7 Ult, Windows 8.1 Pro, CPU Q9650-4.275GHz, E8600 4.5GHz, E6750-3.8GHz Motherboard Evga 780i FTW Memory G.Skill PC2 9600 1200Mhz 5 5 5 15 2T Graphics Card GTX480 Sound Card Asus Xonar D2 Monitor(s) Displays HannsG Screen Resolution 1680X1050 Keyboard Logit