Win10 system vpn connection 720 error how to do?

win10vpn connection 720 error is a common mistake, you can follow the small series of methods to solve the problem:

1. Possible server problems, non-user problems, please report to the administrator; may be too many server people, You can try to connect several times.
1, start & mdash; & mdash; run & mdash; & mdash; regedit.exe, open the registry editor, delete the following two keys:
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock2
2, open %winroot with Notepad %infnettcpip.inf file, found:
[MS_TCPIP.PrimaryInstall]
Characteristics = 0xa0 <------ Change 0Xa0 here to 0x80 Save and exit
Step 2 Description: Many friends The %winroot%inf folder may not be found. The correct path is C:WINDOWSinf. Inf is a hidden folder. If you don't see it after entering C: WINDOWS, please click on the "Tools" tool in the "Tools" file. Clip options “——“View “ in the “ display so files and folders & rdquo; before the check, find nettcpip.inf file suggested with the shortcut key Ctrl + f; 0xa0 sometimes also shows 0xA0, after opening Also use Ctrl+f to check, or find it for a long time)
3. Open the TCP/IP property of the local connection---Add protocol ——from disk—— browse to find the just saved Nettcpip.inf (%winroot%infnettcpip.inf) file, and then select "TCP /IP protocol" (not select that TCP /IP version 6, be sure to pay attention!).
After this step, it returns to the window of the network connection, but at this time, the "Uninstall" button is already available. Click the "Uninstall" button to remove the TCP/IP protocol and restart the machine.
4, after restarting, follow the third step, re-install the TCP /IP protocol.
5, restart again, this should be OK, you can set the IP address as needed.
2. Check if your computer or VPN server broadband connection is normal.
3. There is another solution, reinstall TCP /IP protocol:
(1), start & mdash; & mdash; run & mdash; & mdash; regedit.exe, open the registry editor, delete the following two Keys:
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock2
(2) Open the %winroot%infnettcpip.inf file with Notepad and find:
[MS_TCPIP.PrimaryInstall]
Characteristics = 0xa0 <- --- Change the 0Xa0 here to 0x80 Save and exit
(3), open the TCP/IP property of the local connection--Add the protocol —— From the disk —— Browse to find the nettcpip just saved .inf (%winroot%infnettcpip.inf) file, then select “TCP/IP protocol" (not select that TCP/IP version 6).
After this step, it returns to the window of the network connection, but at this time, the "Uninstall" button is already available. Click the "Uninstall" button to remove the TCP/IP protocol and restart the machine.
(4) After restarting, follow step 3 and re-install the TCP/IP protocol.
(5), restart again, this should be OK, you can set the IP address as needed.