Vpn 720 error? After upgrading win8.1 vpn error 720 solution

from win8 update to 8.1 found vpn login 720 situation, all kinds of unexplained methods on the Internet, here I introduce a Simpler, Xiaobai can understand the method

1, first right click on this computer to open the device manager, then we find the network adapter, wan mini port (ip /ipv6 /network monitoring There is a yellow exclamation mark, and it seems that the problem is here.



2, right-click update is not used to click to uninstall and can not be uninstalled online There are many ways to delete after modifying the registry, but for Xiaobai, the registry is a nightmare We use the following method

3, right wan mini port (ip) - update driver software - browse computer to find driver

4, list of device drivers from the computer Select - Undisplay compatible hardware - then pull down to find Universal Mobile Broadband Adapter - then install it in the next step

5, after installation is complete, it will prompt error number 10, ignore it. It is very important to uninstall the newly updated Mobile Broadband Adapter to Device Manager

6, and then restart the computer. This time it may be a bit slow to restart the computer, because the computer is reinstalling the adapter that was just deleted, and the reboot is completed. Device Manager found that the exclamation mark has disappeared. Now try again with vpn.

Note: There may be a short network disconnect when updating the driver. If it fails, please use all the adapters with yellow exclamation mark. The same way to fix it.