Try this: Type in "Drivers" in your search box (Windows 8 and up users). Then, click on "Update Device Drivers". Next, you'll see something listed under "Network adapters" called "TAP-Windows Adapters V9". And once you do that, Right click "TAP-Windows Adapters V9" and click on properties. Under "drivers", you'll see "Update Driver" Click it and and let it update. You'll get a message saying how it was successful in updating it. Then try running Bolehvpn and connecting to a server, like I did. Hopefully you'll find successful, as I did.