When the win7 system connects to the VPN, it prompts 721 error how to handle

First, the cause analysis:

1, 721 error is caused by your computer in the internal network, because there are multiple in the LAN Computer, the server can not correctly determine which computer is the specific, so the connection will be prompted error 721.

2, Win2003 routing and remote access to build vpn, some places dialing prompt error 721, the VPN policy is changed from pptp to L2TP.

3. The router prohibits PPTP connections.

Second, the solution:

1, click & ldquo; start & mdash; & mdash; run & rdquo;, type & ldquo; regedit & rdquo; command and click & ldquo; OK & rdquo;;

2. In the Registry Editor, find the following registry HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Class/{4D36E972-E325-11CE-BFC1-08002bE10318};

where is the WAN Miniport (PPTP) Driver's network adapter.

Note: "000x" represents several options below 0001-0009, the general PPTP is 0003, the specific one by one click to view.

3, click on the menu bar & ldquo; edit & mdash; & mdash; create & mdash; & mdash; DWORD value & rdquo;;

4, enter the ValidateAddress command press Enter. The default setting for this value is “1” (open), so you need to set it to “0”turn it off;

5. Restart your computer.